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Thank you for the review of this camera. I was waiting for it to be online, because I really was thinking about buying this camera.

Shame Sony or another respectable maker doesn't make such adapters. This one looks very cheaply made and I doubt many people would risk mounting their heavy premium lens.

So really, it's all about balance. Is a good bit of extra size and weight worth it for an equally good bit of extra image stabilization? The answer can really only be taken on a case-by-case basis. For photographers and filmmakers using third-party glass with adapters, the a7 II may be a sensible purchase; its price-tag isn't that much more than that of the original a7 when it first came to market. And the IBIS will allow those users to get the most out of their legacy lenses. For owners of the original a7 considering upgrading, the decision is less clear, but most signs point to holding out for the next iteration of the a7; one that may have a newer sensor, processor, and perhaps even better IBIS.

Accurately estimating a DUT's extinction ratio requires linearly polarized incident light, whose extinction ratio is much higher than that of the DUT, as well as an optical power sensor. It is sometimes the case that a linearly polarized source provides light whose extinction ratio is adequate (see the discussion in the following section), but it is typically necessary to include one or more linear polarizers between the source and DUT (Figure 1).

"I will have to assume you don't know what a focus ring is for. You really use AF while your camera is on a tripod, and the mirror locked up?"

whose value can be used to estimate the DUT's extinction ratio (ERDUT ). The estimated and actual values can differ by a large amount, and the difference strongly depends on the extinction ratio of the light incident on the DUT. The most accurate estimates of ERDUT  are provided when the incident light's extinction ratio is orders of magnitude higher than ERDUT . This is discussed in the following two sections.

I understand that reading the comments must be frustrating, but getting down in the mud yourselves doesn't exactly give credibility to the review or the site.

索尼RX100

I do wish you'd been specific in mentioning that that photo was taken with the FE35 f/1.4, either by stating that in the write up or by including the EXIF data. I suppose it only stands to reason, since that's the only f 1.4 native lens available, but still...

Image quality is essentially the same as that of the Sony a7; both have nearly identical guts, IBIS aside. The 24.3MP sensor found in both is remarkably versatile, even if it's not the newest sensor around. And while it's not the same sensor as the one found in the D750, they do have very similar specs, masked pixels for on-sensor PDAF aside.

is plotted as the blue curve in Figure 2. This equation assumes a single linear polarizer is placed between the source and DUT, and that the extinction ratio of the source is ERsource . The value of ERsource  is set to 1 when the source is unpolarized. The extinction ratio of this polarizer is ERref . If a set of polarizers is used instead, the value ERref  should be replaced with the set's effective extinction ratio. If there are no polarizers located between the source and the DUT, replace ERref  with a value of 1.

Isn't there an error in your version of the specs? AEB allows not just 2EV but 3EV intervals at 3 and 5 frames. This is of some importance for HDR work.

On the flip side, the bad battery life was never mentioned? It sux! did they actually use the camera? I have nikon and this...nikon collects dust!

Why is that? So Dslr's have mirror lock-up, why? Is it because of mirror vibration...maybe? And if the mirror lock-up is engaged, you'll have to use a tripod.

So should you expect similar image quality to what we've seen from the D750? Definitely not. For starters, they use comparable, yet different sensors and the D750's is likely newer. Also, its important to remember that camera companies process their Raw data in very different ways. In general, Sony Raw files are less versatile than Nikon ones. The reason being that the a7 II and Sony cameras do not provide lossless 14-bit Raw data like Nikon, Canon and most other manufacturers do. Sony instead uses lossy compression, and an odd implementation at that, resulting in all around-less malleable files than the competition. You can read more about Sony's Raw compression here. It's important to note that there is no way around this compression.

Recently did a ten day trip to Newfoundland with the Sony A7 II, and a bunch of vintage Olympus Zuiko OM lenses, shooting landscapes. Battery life was never a hindrance. I carried 2 extra batteries in my pocket, which by no means slowed me down as much as having to use a tripod would have. It was nice having an effective IS system on all of those 38 year old lenses. Some of the shots were using a 200mm f4 lens handheld, with no motion blur.I prefer to use manual focusing on all of my work, like I have for the last 43 years. The A7II makes MF very easy. Changing a battery is lot easier than reloading the camera with film after 36 frames....I feel spoiled.

The bigger-sized grip was one thing we all did agree upon, though. It counteracts the added weight of the camera nicely. It's also just plain comfortable to hold in, even in one hand. That is, until you try and change the incredibly-tiny, recessed front and rear command dials.

The guts of the Sony Alpha 7 II are quite similar to the original Sony Alpha 7. They use the same sensor and processor. They both have bright, high-res viewfinders and nearly identical button layouts. Comparing pros and cons for both cameras, you will see a lot of crossover. This is because many of the features that made the original a7 a great camera, also made their way into the a7 II. Unfortunately so did a few of a7's downfalls, like an over-sensitive eye-sensor, a loud shutter and noisy high ISO images.

It really is a very good camera, and I am glad our review could help you. I personally found it bulky, but that is just my opinion. At the end of the day, what really matters is how it feels in YOUR hands. I'm glad you got to take some time to play with one in person and find out!

Sony, as a camera manufacturer, is no stranger to being first. The a7 II is the first and only mirrorless camera on the market that offers a stabilized full frame sensor (the Sony a99, a translucent mirror camera with a full frame sensor, is also image stabilized). Much of this review analyzes the pros and cons of taking the components of the original a7, and sticking them in a larger/heavier camera body, with sensor-based stabilization.

LA-EA3 has no translucent mirror, it solely relies on the sensor tech to focus. It is much slower and trakcing does not feel as confident. LA-EA3 lacks AF motor and hence lenses wihtout motor DO NOT autofocus at all. From the ones with motor I have found f/1.4 lenses to work well f/2.8 lenses do have problems and I have not tried darker lenses. So if you have some very bright Tamron USD lenses EA3 may be interesting to try out.

Mirror lock-up is used usually for super macro or long exposure when on tripod. This feature isn't for handheld use anyway.

Some consistency throughout the reviews would be nice, every review seems to have different pages, omitting some one page in one review and different in another. For example I can't find what the custom button and wheel assign-ability is with this model here. Hoping you guys take note and better standardize in the future.

Estimating the Extinction Ratio of the DUTIt is important to note that this approach estimates the absolute extinction ratio of the DUT, rather than the extinction ratio of the light.

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On the white balance thing this is easy. Find some white object - piece of white paper (not yellowish recycled one). Open your white balance settings (this is either in the menu or can be assigned a button or put in the Fn menu). From the WB settings select "SET" at the very bottom. POoint your camera to the white paper (there is little circle in the middle of the screen/evf that should be over the paper). Press the center button on the rear wheel. Select one of the 3 registers where you want to store the current measurement. You are all set! Colors should be more accurate.

Recently, a discussion in the DPReview forums posed the question: "What have you learned that you would tell beginners?" We thought we'd share what your fellow readers had to say, along with some insight from our editors.

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"Yes, he's a fan boy so it explains the disparity, but you're a worse fan boy so it must be pointed out because I can't bear the thought of agreeing with you on anything".

So using the compare mode, The A7II shows image quality in RAW mode is not as good as the original A7! This review needs updating on RAW image quality with the latest firmware. But I suppose like Ming the Merciless the review was only the play thing of the moment.

A good guess why battery life is shorter than other cameras is the IS system, which is the reason I bought the camera. Using a tripod and mirror lock up slows me down, and restricts my movement. It's a feature I would gladly carry extra batteries to have, considering how light Li-ion batteries are. I don't shoot weddings, sports, or news. There are other professional venues besides those, where taking the 30 seconds to change a battery is not a big deal.

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Well, what did you expect from DPReview doing a Sony product? It has been like this forever so I dont even bother to read anything but the summary to see if they have changed. Then I go back and enjoy this BEAST of a Camera shooting with FD lenses at insanely low shutter speeds. :)

What the review looked over entirely (or didnt stress enough) was the huge amount of compatiability this camera has with legacy lenses. Add in IBIS and suddenly all those MF lenses has OSS! Also, it never mentions any of the app driven aspects, where you can do some neat post processing, upload to social media automatically and best yet, use your phone as a viewfinder when trying to take shots of groups or even when putting the camera on crazy ledges in nature.

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i'd love to have & appreciate the A7 II all-metal mount onto my A7, but i can't imagine that the Mk. II does feature only plastic dials onto the body - and this for that asking price ! Like DPR said, my dials onto the A7 are out of metal, aluminium here. That's a huge drawback & no-go into this price class.

Objective lenses are responsible for primary image formation, determining the quality of the image produced and controlling the total magnification and ...

Very convenient. Wedding/sports photogs usually add a grip (meaning more weight) for more power, because these seconds can be crucial. Sony claims this camera is for professionals. It sports professional features. It costs as rivals DSLRs. Why then is the battery life sub par?

The Sony menu system is conflicting. Is it like this for canikon? If you want eye AF then you must be in AFs and if you want tracking you must be in AFc. And as you said, if you want DMF then you select that from the menu. Even if you assign one of the buttons to make it a quick change, it's frustrating to me that I can't use it all at the same time. I'm new to photography, though, so maybe this is the sort of thing people have always put up with?

The a7 II is heavy, yet comfortable to hold. The shutter button has been moved to a more accessible spot, but the command dials have been made significantly less accessible. Custom buttons are plentiful, though not always that easy to reach on the fly, the 'C1' and 'C2' buttons specifically are quite inaccessible.

It can be difficult to accurately measure the values of Pmin , and errors in these measurements can have a substantial negative impact on the the value of ERest . Following some guidelines can provide the first steps to improving the accuracy of low-power-signal measurements. Note that an unpolarized source can also be used to measure the extinction ratio of a DUT.

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I'm looking for a new FF camera for photo reportaje, photo documentary and street photography, I like to use legaci lenses as well but I'm still veri confused between Sony A7 II and Nikon D750.I think is clear what I prioritize on a camera (fast AF, low light performances, size and weight, unintrusive look, etc.).

Sony has released updates for a range of cameras that address stability issues, provide support for the new 100-400mm F4.5-5.6 lens and add several new functions.

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The Nikon Z5 is clearly targeted at the same photographers at Canon's EOS RP. But its price will also see it have to square up against Sony's a7 Mark II. How does it fare?

I had a go with the A7II in the store, and I agree with you about the dials. I had an NEX-7 and am now using the A6000, and while the grip on the original A7 isn't as nice as the one the A7II, the dials were much better. I shoot in full manual, and the original A7's dials are way more comfortable for quick changes.

You can set it to DMF, which allows you to override the focus on any compatible lens, which should be all FE and E mount lenses, and most of the higher end A-mount lenses if you're using an adapter.

Yes, I have... and you can go quiet mode on the 5d3... the a7 ii is noisy... and cannot be silenced... I think it's largely electronic noise... kind of like 'your door is a jar'

A faster sensor, improved autofocus and video see Nikon's third-gen mid-range full-framer go toe-to-toe against Canon's EOS R6 II and the Sony a7 IV. We feel its all-round ability lifts it to the top of the pile.

@ DPR:So, does the A7 II have shutter blur (shutter-induced, aka shutter shock) in slow shutter speeds (up to 1/250") or not? Is it as good (or bad, if you like) as A7? If you use electronic first curtain does it have any disadvantage?

I am looking at trading my Sony A7 Mk2 for a Pentax K3. I find the Pentax fits perfectly in the hand and seems very straightforward with all its controls and dials. Sony feels like a square black brick and many of its usefulness is buried in the menus. Am I doing the right thing or should I hang on to the Sony. Sony's lens for the A7 are more expensive than the Pentax lens too.

Then, ask yourself - and I am serious here - "Why am I considering spending this much money on a camera only to shoot JPEG?"

The a7 II is one of those cameras you'd be better off holding in your hand before buying. Our staff was fairly split down the middle between those who thought its design was better than the original a7's and those who thought it was worse.

How convenient? About 30 seconds to change a battery? Unless you're a journalist covering non-stop action, I don't see it as a big problem. Good lord, how did photographers survive when they had to reload after 36 shots?

索尼A5100

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Hi All, How does the A7II JPEG compare to the XT-1 JPEG? I played with the X-T1 at the store and love the JPEG colors, however I haven't tried out the A7II.

The extinction ratio of an optical component under test (DUT) can be measured using light from a laser or other linearly polarized source, but it is often necessary to insert a linear polarizer between the source and the DUT. The linear polarizer is needed when the light from the source has an extinction ratio that is not significantly higher than the extinction ratio of the DUT, which is frequently the case. Obtaining an accurate measurement of the DUT's extinction ratio requires the incident light's extinction ratio to be substantially higher than the DUT's. Inserting one or more linear polarizers between the source and the DUT is one way to improve the extinction ratio of the light incident on the DUT.

I am seriously thinking about getting an A7ll camera. I now have a sony a77m2 with about eight lens that work well with that camera. Only two of them, both Tamron zoom telephotos, would work well with a full frame camera. I need to know which adapter would be best for those two lenses on the a7ii. I know some adapters only have limited capabilities. Anybody out there with some knowledge about the A to E mount adapters?

索尼 A73

Steve Huff says the A7II's JPEGs are some of the best JPEGs he's seen. Why is there such a LARGE disparity between what he's seeing and what you're seeing?

For photographers simply looking to enter a full frame system, the choice becomes even more complicated. Traditionally, mirrorless cameras appeal to users seeking a smaller, lighter option to DSLRs. The a7 II is not particularly small or light, though to be fair, it is smaller and lighter than any full-frame DSLR on the market. It's also not a particularly quiet camera, something street photographers should definitely take into consideration. Also, as a system, the FE mount family of lenses is ever-growing. But they are pricey, pricier than a lot of comparable glass for Canon and Nikon full-frame cameras.

For me to buy this camera only one thing is missing, the full video controls via phone. I guess in a year or two, every camera is going to have this and 4k video.

"Battery life is significantly shorter on mirrorless because the screen is always on. Take all modern smartphones - they boast great screens but one must charge them at least once a day. On DSLR you can shoot all day long through the (optical) viewfinder on a sole battery only occasionally checking the results."

I had the A7 before and now I have the A7II with the 24-70 Zeiss. This last combination is getting a bit heavy to carry all day in my traveling days. So I was looking forward to an unobtrusive small camera that won't alert the guards in interesting places. I do not need wall-size enlargements; a double-page magazine spread will do. At that scale it is not obvious which shot has been done with FF or DX. The NEX-7 and later the a6000 were very useful and racked thousands of images. We got everywhere with them and were the happiest. In former times I carried a Canon 1Dx and other heavies. Not any more, now that the quality of the sensors has gotten so good.

If the positions of the linear polarizer and the DUT are switched, so that the DUT is placed closest to the source, the effect can be modeled by exchanging the ERDUT  and ERref  variables in this equation. This change worsens the model's (and the measurement's) estimate of ERDUT . For best results, the set of linear polarizers should be located closest to the source.

Note that A7ii offers various other options to customize colors in JPEG - Creative style lets you pick color rendition that is more suitable for the type of shots you take - portrait, landscape, night shots etc. You can further customize these with saturation, sharpness, contrast and brightness.

When I was young, I spent thousands of dollars on cameras, and the 35mm I went with was a Canon EF and later added a Ftb, plus Canon lenses, 24 2.8, 50 1.4, 100 macro f4, and a 200 2.8. Then first came auto focus and Canon changed their mounts and no new cameras worked with my beautiful glass. Well I didn't need auto focus anyway. Then film died and digital was in. I stepped into digital with a Panasonic DMC-FZ10 because I had always wanted a Leica lens because I could see the difference in pictures taken with them over all other 35 mm cameras (from seeing a monthly club contest with one member owning a Leica). I have been dragging my feet on stepping into a high end inter-changeable lens system, but now I have found my camera. Can use my old lenses and get some image stabilization, and prime lenses made by Zeiss, how can I go wrong. First lens will be the 55mm, but the old Canon 50 1.4 will do while I save a little more money.

I use a 5D Mark II, and the A7ii is a lot lighter and it's a great deal smaller. For a FF DSLR user, it's a very comfortable step away from lugging a brick. It's only bulky compared to its lesser APSC brethren.

I liked the feel and weight of the A7ii. So, I double-checked this: When in any auto focus mode, the focus ring is non-functional. In order to utilize it, you must (in the menu) choose 'manual focus'. And vice versa. There were several reasons I sent mine back - noisy high ISO, no quick review at 100%, inconsistent follow focus and I'd like to be able to review on the LCD instantly, not the EVF. But the focus ring being non-operational except by the menu - that's a deal killer. I'm checking out the Fuji line next.

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I'd rather carry a couple of extra batteries than needing a tripod for just about every shot because of mirror vibration and lack of IS.

I really think that DPReview should update its review of the A7ii, in light of the improvements provided by the 2.0 firmware, which both addresses the complained-about RAW compression issue and in the phenomenal improvement in AF with adapted Canon lenses. Frankly, following the firmware update, I cannot imagine that the A7ii would not qualify for a "Gold" award from DPReview. While it may not provide the stellar low light performance of the A7Sii and A7Rii, I would easily say the A7ii is now is 90%+ of the camera that those two are at half the price. That's my $.02.

Sony claims subject tracking or 'lock-on AF' is 1.5x better on the a7 II over the original a7. We found lock-on AF to be really hit or miss, though more 'hit' than the original a7. When it works, it works well. When it doesn't, it fails completely. Our feeling is that the green box highlighting what the camera thinks is the subject you wish to track is a bit over-engineered: it tries to be intelligent in picking something near your selected AF area to focus on, but often picks the wrong subject, or wanders off even after initially picking the correct subject. It's just not as reliable as class-leading implementations, such as Nikon's 3D tracking, which does an uncanny job of sticking to whatever was initially underneath the selected AF point. That said, the a7 II does have the potential to track subjects better than systems using only depth information to track.

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according to the test parameters on the conclusion page the image quality (raw and especially jpeg) and the high Iso performance are far behind aps-c cameras like the Sony A6300/6500 and the Nikon D5500/5600/7500/7200 how is it possible this is a full frame camera ?

FWIW Bluevellet is an anti-Sony fanboy, regular troll (among many other non-Sony folks) in the Sony forums. Steve is a fanboy for anything he gets his hands on, so he's equal opportunity that way, at least.

Unlike the a7S and a7R, which both use contrast-only AF systems, the a7 and a7 II both use on-sensor phase detect AF (PDAF) coupled with contrast detect AF. So right off the bat, both cameras are going to offer a huge leg up over the 'R' and 'S' when it comes to focus (save for the fact that the a7S will focus in lower light). The difference is especially noticeable when shooting in Continuous AF mode, where the camera has to determine the distance to a subject continuously. Both the a7S and A7R will hunt back and forth in such scenarios. The a7 II does not - as long as your subject remains within the central portion of the frame.

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We were also quite impressed with the a7 II's ability to accurately lock on and track faces. It does so with a much higher success rate than traditional lock-on subject tracking (more on that below). The a7 II does still needs some work in terms of initial AF acquisition speed though, where it still occasionally hunts, not as much as the a7 mind you, but more than other cameras in its class.

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In general, the extinction ratio of light from most lasers is too low to be suitable for measuring the extinction ratios of highly polarizing DUTs, such as linear polarizers. In this case, a linear polarizer placed before the DUT (as shown in Figure 1) can improve the extinction ratio of the incident light. By the same principle, adding an additional linear polarizer at this location will further improve the extinction ratio. The transmission axes of the two polarizers should be aligned exactly parallel to obtain the highest extinction ratio.

But there is one thing that makes decision-making diffcult: When I'm looking now at your latest review of the Samsung NX1, I could think that this is probably the right camera for me. Gold award. But when I want to compare it to the Sony A7II, it's not possible. I know that this is not possible because these two are cameras from different groups, APS-C vs. FF.BUT... the price ist almost the same. So what should I do if I want to spend about this amount of money for my new camera, and it does'nt matter if it's APS-C or FF - which one should I take? Which one offers the better value for my money? I know that this of course depends on my individual demands, but you probably know what's my problem now.

Have you really compared the two? I seriously doubt the 5D3 is quieter. The shutter noise of the A7II is somewhat less than the A7, keep in mind.

How is a7II with any A-Mount lens performance? Lens like 70-400 or any other telephone lens performance. i am looking for camera for family and vacation use as well as bird photography. I would be happy if i can achieve both with a mirror less since i can invest in good lens for mirrorless which will be usefull in the future.

Bad review. Concerning IS, the ability to use slower shutter translates to either lower ISO or better DOF. These are real advantages, and not just when wanting to hand-hold. Put a long lens on a camera on a tripod, and you have shake. You end up either using higher ISO than is desirable, or larger aperture. IS helps greatly. Also, in situations where IS will help with picture quality, it also helps with autofocus. With the a7II, if you find a lens you like but it doesn't have IS, no worries.

Sony is dire need of professional level lenses at realistic prices. Canon's price level would be perfectly fine with me, but 50% more is not.

We also found the a7 II to have 1-2 stops worse ISO performance than an a7S or D750, shown in our studio scene & confirmed by DXO. This poor ISO performance was more forgivable in the original a7 lineup, perhaps, but not 4 cameras in. Especially given all the competition- the 6D, D750, a7R, and a7S all outperform it by a good margin.

Yes, there are many bodies that provide better out-of-camera JPEG results... but you are leaving SOOOO MUCH on the table by not using RAW.

LA-EA4 is DSLT like AF system that comes in an adapter - there are couple of motors in the adapter for AF and aperture control, there 15 selectable AF points much like older DSLTs like A65. There is AF microadjust just like A77ii. The down side relative to A77 ii is that the AF system of the adapter is much more basic. This adapter works with all lenses compatible wiht DSLTs like A77 or A99. It works in much teh same way

References[1] Michael Kraemer and Tom Baur, "Extinction ratio measurements on high purity linear polarizers," Proc. SPIE Polarization: Measurement, Analysis, and Remote Sensing XIII, 10655, 1065505 (2018).

Like the NEX-7, the A7 is a camera that you needed to spend an hour or two painfully customizing buttons and settings, but once done, it becomes pretty darned good.

I recently replaced my D800E with A7II ... and I am very satisfied so far ... check this link on my blog for my switch little story : http://wp.me/p4moFe-gt

Unfortunately Raw compression issues and noisy high ISO images hold back the a7 II's overall appeal, as do wimpy controls dials. That being said, the a7 II is a positive step forward for the Sony Alpha line of full frame cameras. Its downfalls, taken individually, shouldn't scare anyone away. Compounded, they paint a picture of a camera that is very good, just not great; forward-thinking, but not completely realized. Sony is a stone's throw away from having a mirrorless full-framer that can compete with big boys' DSLRs; the a7 II is oh-so-close to being that camera, it just comes up a bit short.

My mind is blown by the fact that they gave the a7II demerits for bigness! The rationale: It is a tad bigger than the smaller mirrorless cameras that people who do street photography prefer. What did John McEnroe say? The only thing that truly makes sense is to asses its size in comparison with other cameras with similar capability, i.e., other FF cameras. What they did here is patently absurd, and it reveals the strong prejudice in their mindset. What a horrible, sophomoric review.

Basically AF is not very fast with screw drive lenses since it doesn't use a high torque AF motor due to space constraints.

Dan Barcaglia... If, as you say, the A7ii is within a stone's throw of equalling a D750, Sony's done very well. I've spent an hour with the camera in a store, and I think the heft is actually an advantage vs. the A7. The bulk that bothers you is a function of adding the grip, which improves the camera. (In the review, you show the A7 next to the A7ii with a larger lens, which is not quite fair.)

SonyA7R2

I am replying to my own message because I have done a few tests since I had the poor performance shooting moon photos. I mounted my a7II on an 80mm apochromatic refractor and took a bunch of photos of the top of a nearby mountain. I tried it with a telescope diagonal and without. There was no difference and there was no blurring, distortion, nor elongation I had seen photographing the moon. I have to conclude that the new camera was just better at catching more detail including various distortions caused by atmospheric turbulence. It seems to catch more of the good and more of the bad than my aps-c camera. It has the same number of megapixels but it puts out twice the megabytes of information that my older camera does.

Figure 2: The difference between the measured value (ERest = Pmax / Pmin ) and the actual value (ERDUT ) of the DUT's extinction ratio strongly depends on the extinction ratio of the light incident on the DUT. The incident light's extinction ratio is the product of the extinction ratios of the source (ERsource ) and the linear polarizer (ERref ) inserted between the source and DUT. Modelled values (blue curve) and experimental data (triangles and circles) are plotted. In this work, ERsource < ERDUT . The measurements obtained with no polarizer between the source and DUT corresponds to ERref  = 1 and are indicated by triangles. The measurement data obtained with a linear polarizer between the source and DUT are indicated by circles. These data show that without the added linear polarizer, the estimated values of the DUT's extinction ratio were substantially lower than the actual value.

What’s the best camera for around $2000? This price point gives you access to some of the most all-round capable cameras available. Excellent image quality, powerful autofocus and great looking video are the least you can expect. We've picked the models that really stand out.

I just bought my first full frame camera, the a7m2. I have already taken hundreds of shots and am fairly impressed with the images. I seem to be getting about a stop and a half of acceptable higher ISO photos over my a77m2. Half the reason for getting the a7II was for astrophotography. Last night when I was taking photos of the moon through my 11 inch telescope I was very disappointed in the blur I was getting from the camera. I tried everything I could think of to get sharper photos but when I cropped in I noticed sort of a double exposure effect. I was getting two of the very small details. Tiny craters looked a bit elongated as if I had taken two photos and overlapped the craters half way. All 150 photos I tried were similar in that respect. Anybody have great ideas out there?

Scoring is relative only to the other cameras in the same category. Click here to learn about the changes to our scoring system and what these numbers mean.

They will hesitate to do that because it will be the same size as a DSLR lens and all the advantages of smaller size of mirror less will be lost.

2023515 — The characteristic properties of a laser beam can be modified by beam-shaping techniques to meet the demands of specific applications.

Figure 1: The extinction ratio of the optic under test (DUT) can be estimated from two optical power measurements. One, Pmax , requires the transmission axis of the DUT to be parallel with the polarization direction of the incident light, which is vertical in this illustration. The second measurement, Pmin , requires the DUT's transmission axis to be perpendicular (crossed with) the incident light's polarization direction. The estimate's accuracy is better when the extinction ratio of the light incident on DUT is much higher than the DUT's extinction ratio. One or more linear polarizers inserted between the source and DUT may be needed to improve the light's extinction ratio, since light from lasers described as linearly polarized often has an extinction ratio too low to achieve the desired accuracy.

I agree with one of the comments that cameras these days are all amazing in terms of quality, performance that we are just splitting hairs!

This camera still sells like crazy, i bought mine one and a half years a go, but i still think it's a great body for it's price. I use this and the mk1, but i am still happy with it. All my photos are taken with it https://razvanrotaruphoto.ro

索尼a7c2

Pretty much a step back in every respect (especially image quality) except how it feels in your hand. Larger, more expensive lenses = full frame and Sony's take on the A7 market.

Which brings us to an important point: the a7 II only offers PDAF, and therefore robust depth-tracking, over a limited, rather centrally-located, portion of the frame. Cameras like the Samsung NX1 and Sony's own a6000 offer phase-detection AF over almost the entire frame, ensuring that no matter where your subject ends up, focus should be quick.

What’s the best camera for around $1500? These midrange cameras should have capable autofocus systems, lots of direct controls and the latest sensors offering great image quality. We recommend our favorite options.

The Sony a9 is here and it's likely to make a lot of sports photographers curious about switching to Sony. But what's the actual cost of switching if you're a pro? Read more

If you want something better than the A6000, Sony wants you to go FF. They won't release a high-end APSC body cannibilazing their own FF camera sales. All the lens development is FF.

I'm not sure why you'd consider the shutter loud however. With the electronic first curtain, it's only slightly louder than the A6000, and still a more discreet package than most DSLRs. I do agree it's a bit heavy though. Not unbearably so, but it does feel less of a size/weight advantage (for a mirrorless) compared with my A6000. I suppose if you were coming from a full frame DSLR, the weight savings are immediately obvious. But if portability was your first priority, this wouldn't be your first choice anyway.

i have the Alpha a7II and find the manual not helpful at all. At the camera store, they had a large book, describing all the functions well. I can't buy it there. Does anyone know where I can get the full instruction manual?I'm having trouble with shooting true color with indoor lighting, no flash, just trying to set-up the CUSTOM WHITE BALANCE. i'M trying this process and it's not working for me. Colors downloaded into my Dell XPS with the jpegs are just not right. Is this the correct process? or is it my computer and Epson 8800?fIRST PUT CAMERA IN MANUAL FOCUS MODESet Camera to P dial to OK lighting for the indoor situation... usually +1 or +2 for brighterPress C1Scroll to Custom white balance set-up (last one using menu)Press the middle button on control circle thingPress middle button again.. should take picturePress middle button again to save it. Hope the lighting is the same nearby (gallery, museum)

The 5-axis sensor-based image stabilization system, the hallmark of the a7 II and the main differentiating factor between it and the original a7, works well. It provides an average of 2.6-stops of image stabilization, according to our testing, during still capture. We tested the a7 II at 24, 55 and 200mm, and found across the board, users can expect between 2 and 3.3 stops of hand-hold-ability, depending on their focal length. The IS also works during video capture, allowing for better-looking hand-held shooting. But keep in mind, the trade-off of having a stabilized full-frame sensor is a heavier, larger mirrorless camera body (compared to the a7). For some folks, the added heft won't matter, the extra stops of hand-hold-ability are totally worth it. For others, the weight might be a deal breaker.

I bought this camera and a Sony Zeiss 16-35 F4, and I immediately returned it.I use 10 stop ND filters to get very long exposures. At ISO 100, I noticed a heavy amount of noise after 1 minute, even with NR on. A friend says I may have gotten a bad body. Anyone else notice this with 1-3 minute exposures?

Thanks so much for including the shot of the band and description of that low light focus performance. Really appreciate the attention to that kind of shooting, since that's my main interest.

Can some of the short comings be addressed via a firmware upgrade possibly? Like the moire in video, noise in High ISO, AF Tracking improvement and maybe a more silent shutter mode etc?

What's the best camera for travel? Good travel cameras should be small, versatile, and offer good image quality. In this buying guide we've rounded-up several great cameras for travel and recommended the best.

索尼a7m2

After many tests, my advice is still combining A7II and A7III with a high-speed zoom lens. I've tested Tamron 28-75 many times with them, for example: https://www.youtube.com/watch?v=VYs17xKSnwM

JPEG? Well start by reading this DPReview article:http://www.dpreview.com/articles/5365920428/let-me-try-to-address-that?utm_campaign=generic&utm_source=notification&utm_medium=email&ref=notification&ref_=pe_1674010_132618830

I can tell you that in real life use, this body runs circles around a6500 in terms of image quality, especially in low light high iso... no APSC can touch this FF performance.

Pentax K Mount Lens · Pentax K Mount Body Caps & Rear Lens Caps By Forster UK · Pentax-M 40-80mm f/2.8-4 Macro Zoom Lens for Pentax K-Mount Camera's · SMC ...

The reason why I am on DSLR are the vast range of lenses, flashes and other accessories. Sometime mirrorless will also offer such a diversity but not yet.

What's the best camera for travel? Good travel cameras should be small, versatile, and offer good image quality. In this buying guide we've rounded-up several great cameras for travel and recommended the best.

Go ahead, hold on to your DSLR and continue to justify it's lingering existence. Some of us have moved on to take advantage of what mirrorless has to offer. Learn to deal with diversity, and be happy there are choices.

Fresnel Lens Overview. Fresnel lenses are lenses composed of a series of concentric rings. The Fresnel lens construction design allows for large aperture and ...

Sony Japan has posted a notice on its website confirming that November 19, 2021 was the last day it accepted orders for its a7 II series, a6400 series and a6100 (black) camera systems, due to supply chain constraints.

Canon's newest, non-extending 70-200mm F2.8 L zoom for RF-mount includes features aimed at both photo and video shooters. It also works with Canon's RF-mount 1.4x and 2x teleconverters.

When the manufacturers say they've created a camera for 'creators' or vloggers, that doesn't mean they've turned their back on photographers.

索尼a7m4

The only thing holding me back is the lossy RAW, and I thank you for making a strong point about that. Maybe Sony will do something about that with a firmware update... Fuji would.

"The reason why I am on DSLR are the vast range of lenses, flashes and other accessories. Sometime mirrorless will also offer such a diversity but not yet."

A micrometer is equal to 1/1,000 of a mm, so there are 1,000 µm in 1 millimeter. Difference between Millimeters and Micrometers. The millimeter is a measurement ...

i had Sony A7s/Atomos Shogun combo, it performs good, i am extreamly satisfied with it but i need longer runtime. i found a very good portble V oumt battery for this, it powers my camera very well over 11 hours,if you are relatively conservative about turning the camera/Shogun power off between setups,. The battery also comes with a wall plug for self-charging so no extra charger is needed. I've only been using this battery for about a month now, but I am extremely happy with it thus far. btw, i bought this battery on amazon.com, you can serach 177wh V mount battery,link http://www.amazon.com/gp/product/B00RN76282

Battery life is significantly shorter on mirrorless because the screen is always on. Take all modern smartphones - they boast great screens but one must charge them at least once a day. On DSLR you can shoot all day long through the (optical) viewfinder on a sole battery only occasionally checking the results.

I have recently noticed that the a7ii is missing the AF-A mode. i don't partcualrly use it, but it just seems handy to have. my a6000 has it and the a7rii has it. but it's missing fro mthe a7ii? any particular reason? (AF-A is when the cmaera switches between af-s and af-c automatically after you have locked on focus)

I havent found the shutter to be excessively loud at all?Maybe compared to a phone cam it is.The image stabilisation works really well with adapted lenses, i was using it handheld with 1/15-s/speed @ fstop-11 at 7pm in the evening iso 600 28/3.5 ais nikon lens getting pretty sharp reasonably bright results.I couldnt believe it!!!, never been able to do that before. There may be better allround ff options out there, but its still a hell of a camera for the money, just got to learn how to get the best out of it, like any new cam/The colour is natural, resolution is plenty, some files when taken properly kinda look great to me.I dont really care what anyone says in reviews, glad i bought it and feel like i got a nice bit of kit for my budget. If canikon, fujolympus, or sonysung made something like it, i probably would have considered buying it from them, but, they dont yet, so how can i?They all make good cams though.Id have any, within my budget.All about bang for buck.

Sony claims AF in the a7 II is 30% better than the original a7. It's difficult to quantify something like AF performance, considering the infinite number of shooting scenarios, but after some heavy field time, it certainly does seem like the a7 II acquires focus faster, and more consistently then the original a7.

If you don't like menu digging, learn how to assign the buttons. There's custom ones in addition to reprogrammable others. The only things I wish I could do on my A7II without menu diving are turning off picture effect preview (brightens LCD/EVF for manual flash work, etc.) and a toggle for LCD info only. Just about everything else can be put on a button or the quick Fn menu.

A7II owner here.The battery life will be much longer if you use a manual lens and disable the screen, using only the viewfinder (which will shut down whenever your eye is away). Even more if you disable IBIS.I used like 15-20% of the battery over 200 shots, that way. And using a manual lens is not that hard on this camera.

The International Photography Hall of Fame and Museum has announced its 2024 class of inductees, a group that includes photographers, visionaries and historians.

The material control of Germanium lenses is carried out the same way as for the windows. The control of the spherical surfaces accuracy, however, is made with ...

I notice that sample shot was not included with the others in the FE35 f1.4 gallery. Not surprising, since the noise is so pronounced, I suppose. The notes say that the photo was processed in Lightroom. Is that the final product after applying noise reduction???

Reading these comments, I'm a little surprised at the lack of professionalism from reviewers and other commenting DPR Staff. I kind of expect it from random internet folks, but I'm not sure why the reviewers are in the comments calling people "sony fanboys" and such.

I will have to assume you don't know what a focus ring is for. You really use AF while your camera is on a tripod, and the mirror locked up?

Is there a link somewhere where readers can have a read to understand how it performs this test? Pardon me if it's somewhere already on the page but it's not obvious to me old eyes.

My issue with the review is that they're telling you the jpegs are bad and then they won't let you download any RAW files from their sample galleries.

索尼 R5

Sorry to say but the review is frustrating comparing 2 or 3 different -in every aspect -cameras than a clear review on this specific camera.It happens that not all of us owned previous models so its useless..

Effect of Improving the Incident Light's Extinction RatioThe value of ERest  can be modeled for sources with different extinction ratios as well as configurations that do and do not include linear polarizer(s) between the source and the DUT. The modelled value (ERmodel ),

Improve the Extinction Ratio of the Source LightThe extinction ratio of the light incident on the DUT can potentially limit the value of ERest  to a value substantially less than ERDUT . The value of ERest  only approaches the value of ERDUT  when the extinction ratio of the incident light is significantly higher than the extinction ratio of the light incident on the DUT. For example, when the extinction ratio of the incident light equals the value of ERDUT , ERest  is only ~50% of the value of ERDUT . When the extinction ratio of the incident light is two orders of magnitude higher than ERDUT , ERest  is ~99% of the value of ERDUT .

Unfortunately, the conculsion of your testing was not as I wanted it to be... But I think this is not your fault... seems to be the fault of the camera...

The Sony a7 II, as stand-alone product, is very impressive. It offers a good 24MP sensor, in a smaller-than-a-DSLR package, with robust image stabilization, an articulating screen, a very high-res EVF/ LCD, plus a host of incredibly useful video features. Custom buttons and dials are also plentiful, AF accuracy is good, and it can even subject track with a reasonable degree of success.

I think the review was too focused on image quality comparison at crazy ISO ranges and the bulk of the camera, which to anyone who does a blind test realizes the a7ii is much smaller and lighter than any other Full Frame camera.

Vast range of lenses? I can put literally ANY lens on my mirrorless cameras, as long as there's an adapter for it. Whatever lenses your DSLR can use, my mirrorless can. Plus lenses from the old film days. My 38 year old Zuikos work nicely on my Sony A7II.

Canon has announced the latest lens in its EOS VR System. It's intended to be an affordable way for social media content creators to experiment with new media formats.

To Edwaste,DSLrs are easier to stabilize than mirorrless ones. Neveretheless, for shutter speeds longer than 1/15 you'll need a tripod anyway.But for workflow having 1000 shots per battery is more convenient than changing batteries.

Two optical power measurements are needed to estimate the DUT's extinction ratio. The measurement of the maximum power (Pmax ) transmitted to the power sensor requires the DUT's transmission axis to be oriented parallel to the polarization direction of the incident light. The measurement of the minimum power (Pmin ) transmitted by the DUT requires the DUT's transmission axis to be oriented perpendicular to the polarization direction of the incident light. These two orientations of the DUT's transmission axis are indicated by the dashed gold lines in Figure 1, assuming the polarization direction of the source light is vertical.

Hope this isn't a dumb reply but, is your telescope motorised to track with the moon? Since the moon is moving during the exposure, I would expect the craters to be elongated into ovals.

Not a an other dial. If you got have that PASM dail. You should have a small LCD to tell you all the stuff you need to know.....like DSLRs.

We are in May; one third of the year has gone. Since the beginning of the year [2015] Nikon has issued 16 new cameras, Canon 14; Sony only 2 and they are pockets cameras. What's happening? What gives? We have been using Sony cameras for a long time with spectacular results. This company has always been known for innovation in everything they make.Still waiting for the a7000!