On the mirrorless camera side, we have the Micro Thirds Format System, first released in 2008. It shares the Four Thirds System’s sensor size and specifications but uses a compact design with no space for the movable mirror, pentaprism, and other parts of the DSLR mechanisms not found in mirrorless cameras.

Due to their large image sensors, medium-format cameras are traditionally heavier and bulkier than their full-frame counterparts. But that changed, as brands like Hasselblad have come out with smaller mirrorless medium-format cameras like the X1D II to provide photographers with a lighter, more compact option. The newer Fujifilm GFX 100 is also a medium-format mirrorless camera and holds a whopping 102MP resolution.

Medium format is the largest sensor type in digital cameras for photographic applications. However, it doesn’t come in just one size. Medium format has its own group of sensors, with its own equivalents to the four thirds, APS-C, and full-frame formats. There are a variety of sensor sizes for medium-format cameras, and typical sizes range from around 43.8×32.9mm to 53.7×40.2mm.

Special coatings with a hard lacquer matched to the material not only enhance the scratch resistance of the lenses, they also ensure constant visual quality and extend durability. Thanks to the DuraVision®  Platinum coating, ZEISS offers a solution that is three times harder than the previous generation of hard (AR) coated plastic ZEISS lenses and 35% harder than AR coated mineral (glass) ZEISS lenses. This is made possible by the way ions seal the lens when the coating is applied.  Read on to find out more.

Keep in mind that camera sensor formats are not standardized across the different brands or models. Dimensions may vary slightly from the figures listed above.

As a photographer, it’s important to know the difference between camera sensor sizes, particularly if you’re planning on buying a new camera. Sensor size is the first and most important thing you need to consider. It is the main feature of your camera that will have the most powerful impact on your images.

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A premium lens coating can help, one that’s integrated into the  ZEISS DriveSafe lenses. This reduces the subjective sensation of glare1 – e.g. from oncoming vehicles with LED or Xenon headlights – and effectively protects your lenses from both scratches and the adhesion of dirt particles.

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However, a smaller sensor allows added reach (zoom). For example, on a micro 4/3 sensor, which is has a crop factor of two compared to a full frame sensor, a 200mm lens becomes the equivalent of a 400mm lens. Smaller sensors also allow for an overall more compact camera and lens system, which is convenient for travel and long hikes. Finally, smaller sensor cameras are generally less expensive.

High-end compact cameras like the Panasonic Lumix DMC-LX10 and the Sony Cyber-Shot DSC-RX10 IV use 1-inch sensors. This allows these cameras to produce good results—in terms of image and video quality—that you won’t get with regular point-and-shoot cameras.

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It’s all about protecting your eyes from the sun and glare when you’re outdoors. You and your optician can create your ideal sunglasses in terms of both colour and style. Coloured coatings for sunglasses are available for plastic and mineral lenses. A  wide selection of lens tints  – from single colours and gradient tints to bi-colour or even special tints for medical purposes – feature in the range of sunglasses from ZEISS. So your glasses, whether single vision or progressive lenses, will become your favourite accessory that also delivers first-class protection against the sun.

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The Four Thirds System uses a 4:3 image aspect ratio, hence the name, and is featured in cameras like the Blackmagic Design Pocket Cinema Camera 4K. The Micro Four Thirds System uses the same ratio but can also record 16:9, 3:2, and 1:1 formats. It is included in cameras like the Olympus OM-D E-M1 Mark III and Panasonic Lumix G9.

The residual reflection is usually green. The modern Duravion®  Premium lens Coating from ZEISS has an attractive, bluish residual reflection. The barely perceptible bluish residual reflection increases the amount of light the lens transmits to your eyes. And not only that – the blue is less visible to the eye. This means lenses with this residual reflection have the advantage of making your eyes look clearer to other people and have fewer reflections. Your eyes look more natural, almost as if you’re not wearing glasses at all.

Lens coatings act as a protective coating for your lenses, transforming modern plastic lenses into strong everyday objects. Unfortunately, lens coatings are often not given the importance they deserve when people purchase a pair of glasses, with wearers pretty much leaving this decision up to the optician. To make sure you’re well-prepared when it comes to anti-reflective, hard, CleanCoat and other coatings, we’ve put together a guide to help you find your way around the maze of coatings. After all, the choice is yours!

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How can you recognize the ZEISS DriveSafe coating? The ZEISS DriveSafe coating is evident from a slightly violet residual reflection on the lens, which is barely visible and therefore not distracting.

Created by Olympus and Panasonic, the Four Thirds System is a standard that allows for the compatibility of lenses and bodies across participating camera makers. Image sensor size is 17.3×13mm with a crop factor of 2.0 when compared to full-frame camera sensors.

Just like a lotus leaf, water beads right off thanks to the wetting properties of the coating. A great bonus, particularly for anti-reflective lenses, because you’re more likely to notice dirt through improved reflection reduction than on lenses without such a coating.

So why not talk to your optician about the anti-reflective coating services on offer and about the coatings’ durability today! Ask for their tips about what you need to look out for to ensure your coating lasts as long as it ought to.

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Formerly only needed when the sun was shining brightly, sunglasses with a  mirror coating  are now very much in vogue – and they’re available in your prescription! Talk to your optician today to see the wide range of colours and functions available for sunglass coatings.

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Any sensor that is about 1.5 to 1-inch in size or smaller can be found in non-interchangeable lens cameras (your typical point and shoot) and smartphone cameras.

Our vision has changed enormously now that we use digital devices such as smartphones, tablets, and modern illumination through LEDs and displays. We are subjected to more blue light than ever – all day long, in fact. High-energy blue light is also believed to have a negative impact on vision over the long term.

Unfortunately, no coating will mean never having to clean lenses again. However, lenses can be coated in such a way that impurities are less likely to adhere to the lens. CleanCoat makes the lens surface smooth, making it more difficult for dirt and dust to adhere. This simplifies lens care tremendously. The smoother the lens surface, the better.

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Lenses can help protect your eyes against blue light thanks to a special filter, making it easier to work at a computer or use digital devices. Thanks to DuraVision® BlueProtect from ZEISS, you receive a premium lens coating together with a blue light filter, which is great for all wearers who are often indoors and find that the light emitted by LED light bulbs, TVs or computer monitors makes them tired or uncomfortable. It is therefore advisable to opt for this lens coating, even for glasses you need for work or when watching TV.

Full-frame sensors are available in both DSLR and mirrorless cameras. They have the same dimensions as the 35mm film, hence the name. The 35mm full-frame sensor type is the gold standard among professional photographers who want the highest-quality images.

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As an additional layer of complexity, each bucket has a filter on it that only lets in red, green, or blue light. In essence, each bucket can only collect 1/3 of the total light trying to enter it. For each bucket, the amount of the other colors is approximated. All this information is then converted to the final image you see on your screen.

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It enables transparent, clear and unimpaired vision, makes glasses more attractive and permits uninterrupted and reflection-free vision for the wearer.

There’s also the medium-format cameras—the lesser known of the group. These cameras have the largest sensors out of all the available digital cameras for photography, which means they can get pretty expensive.

With DuraVision DriveSafe, 64% of wearers tested said they experienced fewer problems with glare thanks to the new coating compared to other premium anti-reflective coatings. Source: Internal wearer trial (CZV employees in Germany), external wearer trial (eye care professionals and consumers in Spain)

Just ask your optician. Choosing the right coating also matters if you’re buying children’s glasses or a second pair for yourself – so don’t leave this important decision to chance!

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Not all cameras are created equal. An entry-level DSLR won’t give you the same results from a professional, full-frame DSLR—even if they have exactly the same pixel count. If you want to get the highest-quality images with your camera, you’ll need something with extremely powerful specifications and a physically large image sensor.

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Another coating level with antistatic function can also help keep your glasses cleaner: fluff – from clothes, for example – adheres to these lenses much less.

The Canon EOS R5, for example, is a full-frame mirrorless camera option, and the popular Nikon D850 DSLR has a FX full-frame sensor.

Lenses without an anti-reflective coating have a great disadvantage:  There is a lot of visible reflection for the wearer. These reflections are particularly distracting on wet roads or when driving at night, but also when talking to someone as that person will see themselves reflected in your glasses rather than look at you.

The groundbreaking EOS-1D was the first Canon camera to carry the APS-H sensor type was, and it launched in 2001. Canon released four more cameras (all members of the 1D line) with the same sensor type before discontinuing it.

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Self-tinting lenses are a great idea for anyone who doesn’t want to change their glasses in the sun as these lenses incorporate a special technology which adapts to the sun – e.g.  PhotoFusion X by ZEISS

The typical APS-C sensor size is different across camera brands. Canon APS-C sensors are usually 22.3×14.9mm, while other brands like Nikon, Sony, Pentax, and more usually feature APS-C sensors with 23.6×15.6mm dimensions. Many cameras including the Canon EOS M50 Mark II, Fujifilm X100V, Sony Alpha a6600, and Nikon Z50 all hold APS-C sensors.

We’ve all been there: Unpleasant glare from oncoming traffic or street lights impairing our vision. This is tiring for drivers and can even become dangerous.

Many digital cameras are commercially available on the market right now, and they all have a wide range of sensor sizes. And while it’s good to have choices, it can also get pretty confusing, especially to a beginner.

A camera’s sensor dictates the quality of the images it can produce—the larger the sensor, the higher the image quality. Bigger image sensors have bigger pixels, which means better low-light performance, reduced noise, good dynamic range, and the ability to obtain more information.

Meanwhile, CCD sensors tend to produce less noise which translates to images appearing sharper. This goes hand in hand with CCD sensors being more sensitive in lower light conditions. Because CMOS sensors are much more available and costs less to manufacture than CCD sensors, cameras with CMOS sensors are usually less expensive.

Again, there is no simple yes or no answer to this question. In the last decade or so, CMOS sensors have become a lot more prevalent than CCD sensors. Most consumers cameras and cell phones manufactured today use CMOS sensors. CMOS sensors, in general, use less power, therefore the camera battery will last longer.

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For plastic lenses (organic lenses) you definitely need a hard lacquer coating. While plastic lenses are easy to wear, the material used is softer and more prone to scratches than glass lenses (a.k.a. mineral lenses) – at least if untreated.

The APS-C or crop-sensor format is the most well-known and most versatile of the bunch. The APS-C sensor is popular in DSLR and mirrorless cameras alike. Beginners and professionals alike use it thanks to its adaotability.

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The APS-H is slightly larger than the APS-C sensor format that many Canon DSLR cameras use today but smaller than a traditional full-frame sensor.

Anti-reflective lenses can be recognized by the residual reflection. Regardless of the material used for the lenses, they have a characteristic colour when you hold the glasses at a slight angle against a white background. This is highly practical for the wearer: the optician can identify the anti-reflective coating and even offer the same high quality if a switch to another material is desired.

Essentially, a sensor is made up of tiny individual photosites. Think of each photosite as a bucket covered by a lid. When an exposure is initiated (press of the shutter button), the lid is uncovered to collect photons of light. When the exposure stops, the lid is placed back on the buckets (photosites). The collected photons are then converted to electrical signal, and the strength of that signal is determined by how many total photons were collected.

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Lens manufacturers want to make it easy for their customers to select a coating, which is why they offer packages for different coatings. And ZEISS is no exception: with the  DuraVision®  Premium lens coatings, you receive a complete package comprising top anti-reflective, hard, antistatic and CleanCoat coatings.

The answer to this question isn’t a simple yes or no. It all depends on what’s most important to you. In general, the larger the sensor the better the image quality because it can acquire more light, generates less noise, and can create a shallower depth of field (more background blur) which is preferred my many for portraiture work.

We’ve all heard of the full-frame DSLR camera, of course, which is the gear of choice of seasoned professional photographers. For enthusiasts and beginners, the usual choice is the APS-C format or crop-sensor DSLR camera. However, some prefer to use mirrorless cameras or MILCs, which are the smaller, lighter versions of DSLRs. Lastly, there are the 1-inch sensor cameras, which are better known as point-and-shoot or compact digital cameras.

One thing’s for sure: Light has a considerable effect on managing our internal body clock, and thus our sleep patterns. Strong light in the early evening tells your body to stay awake for longer. When you look at the screen on your computer or another digital device, you subject your eyes to large quantities of blue light, causing such things as reduced contrast sensitivity. Focusing on a screen can also be strenuous for you and your eyes, and contribute to digital eye strain.