I have macular degeneration. Rt. eye is wet, Lt. eye dry. I am looking for a magnifying glass that lets me read letters or documents too small for me to read as it is.

When one thinks of a magnifying glass, they tend to think of the big Sherlock Holmes type lens. However, in actual use, you want a lightweight, and powerful magnifier that has impeccable optics and is simple to use. Utilizing the best magnifier for demanding jobs like inspecting diamonds and gemstones is essential to their occupation, while hobbyists who collect rocks and minerals just need to buy a decent magnifier that they can afford to lose.

I truly want to see the item at a minimum of five times its actual size, more probably 10 times the actual size because I would not be using a magnifying glass if I didn’t want to look at something really really small. I’m not using this as a reader. I bought a digital microscope but and somewhat unimpressed because I have to be a foot above the coin to be able to see the whole coin so I was hoping to be able to buy a hand magnifier with a 4 to 8 in lens that would give me nice easy clear views

Canon also has two lens lines for its mirrorless cameras, RF and RF-S. RF-S lenses are designed for the company's APS-C format mirrorless cameras but they can be mounted on its full-frame mirrorless cameras as well. Canon RF mount lenses are designed for use on its full-frame mirrorless cameras, but they can be used on its APS-C format cameras as well.

The iris blades inside a lens close to form an aperture through which light passes. The size of the aperture determines how much light passes through the lens to the film or sensor.

Because they only cover one focal length prime lenses are often smaller and lighter than a comparable zoom lens covering the same focal length.

On Amazon 35mm & 50mm 3x glasses are available. Better to have 2 glasses of same size & put it in one case (cover) after opening original rivett , put two lens together having 2 or three small aluminum washers so glasses may not touch or rub each other & use a long rivett used in a baggage which at end has split part. I did that & works very nice for reading.

Prime lenses have a single focal length, while zoom lenses allow you to change focal length to get a wider or narrower view.

Canon EF: Canon full-frame and APS-C DSLRsCanon EF-S: Canon APS-C DSLRsCanon RF: Canon full-frame and APS-C mirrorless camerasCanon RF-S: Canon APS-C and full-frame mirrorless cameras

Lenses with a wide maximum aperture (e.g., f/1.8 or f/2.8) are called ‘fast’ because they let in lots of light and allow fast shutter speeds to be used.

Why is it that magnifying glasses aren’t labeled accurately and that the X doesn’t truly mean twice as big. If I view a quarter which is .75 inch and then view it from the same distance using a 10X lens I’d expect it to be 10 times the size 7.5 inches but it’s closer to 2 inches. What the hell ?

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This Nikon Nikkor Z MC 50mm F2.8 is a prime lens. As it produces framing similar to the human eye, 50mm lenses are often called ‘standard’ or ‘normal’ lenses.

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SonySony FE: Sony full-frame and APS-C format mirrorless camerasSony E: Sony APS-C and full-frame format mirrorless cameras

LeicaLeica M: Leica M-series rangefinder camerasL: Leica full-frame and APS-C format mirrorless camerasLeica S: Leica medium format DSLRsLeica SL: Leica full-frame mirrorless cameras

I am trying to find a magnifying glass for a friend of mine that has muscular degeneration and is having a hard time reading the newspaper. She probably needs 5X strength. Where can she go to see one or buy one? The zip code is 44512, Youngstown Ohio.

The focal length magnification (also known as a ‘crop factor’) describes the increase in effective focal length that the sensor produces.

Prime lenses often has a wider maximum aperture than a zoom lens covering the same focal length range. That's useful because it means you can use faster shutter speeds and blur the background more with the prime lens.

The ‘R’ in the name of the Fujifilm XF 10-24mm F4 R OIS WR indicates that it has a ring that can be used to adjust its aperture setting. When a lens doesn’t have an aperture ring, the setting is changed using a dial on the camera.

I seek a magnifying glass to supplement my reading glasses but would like to try them out first. Where can I go to see and test before buying? My postal area is PE7 1QW.

The view through the magnifying lens should be crystal clear with no internal reflections. Highlights should be sharp and brilliant, with no colored fringes. The lens should be achromatic. A flat object should not look buckled or warped. A magnifier should not be loosely put together.

A lens’ angle of view measures the extent of a scene it can project onto a camera’s sensor. A wide-angle lens is so-called because it captures a wide view of a scene (i.e., all or most of it) and has a large angle of view.

It's important to note that the image you get from a lens will look different depending upon whether it's mounted on a full-frame or APS-C format camera. In some cases, a lenses designed for use on an APS-C format camera can be used on a full-frame camera but the camera will crop the image to APS-C format size (or it will show heavy corner shading). More on this later.

The Nikon Nikkor Z 180-600mm F/5.6-6.3 VR is a telephoto zoom lens with a focal length range of 180-600mm and a variable maximum aperture of F/5.6 (at the 180mm end) to F/6.3 (at the 600mm end). It’s designed for use on Nikon’s full-frame mirrorless cameras.

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Hold the lens up next to your eyes while bringing the object close to it - about a few centimeters from your face. The idea is to focus your attention through the magnifying lens, the same way you look through eyeglasses. If you normally wear glasses, you will need to keep them on. A magnifier won't correct for astigmatism as well.

Nikon, Sony, and Fujifilm APS-C format cameras have a focal length magnification factor of 1.5x, which means that a 50mm lens produces images comparable to a 75mm lens on a full-frame camera. Canon APS-C format cameras have a 1.6x magnification which makes a 50mm lens look like an 80mm optic.

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Here's a breakdown of which current lens mount is used by each camera manufacturer. The first camera type listed for each mount indicates the primary target for the mount.

These lenses are generally more desirable because the exposure doesn’t alter as you zoom in or out, but they also tend to be bigger, heavier, and more expensive than zooms with variable maximum apertures.

Magnifyinglens concave or convex

I have not been able to personally view a selection of handheld glasses because what l need are too expensive for stores here to carry. I am therefore forced to go online. The problem there is to determine if what is offered meets my need. They all different prices from $5.00 to $1500.00. Apparently the greater the magnification the higher the price. So what do l order?

NikonNikon F (FX): Nikon full-frame and APS-C format DSLRsNikon F (DX): Nikon APS-C and full-frame DSLRsNikon Z (FX): Nikon full-frame and APS-C format mirrorless cameraNikon Z (DX): Nikon APS-C and full-frame mirrorless cameras

Given the same X (times) factor, a larger lens is always better. There are tons of cheap inferior magnifying glasses out there claiming 20X, 30X, and even 45X magnifications, yet they sell for less than $10. These are false claims as any magnifier over 20X magnification will have such a small field of vision that they are no longer considered magnifiers, but rather loupes. Higher quality lenses with high magnifications are also more difficult to produce, consequently they tend to be more expensive.

While lenses are marked with their actual focal length, photographer often refer to their 'effective' focal length which is the focal length with the crop factor applied.

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Beware of buying the magnifying jewelers loupe 45x on eBay and the 100x on amazon the 45x is 6.95 and the 100x is over 20 dollars on amazon I ordered both both , and both are the 45x with identical numbers, this needs to be reported.. one co. is mega mail online, another is Pandacub 1990, just wanted to let people know about the scam, Thanks.

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I wear prescription glasses and need magnifying glass with headset to practice calligraphy. Do I wear them over my eyeglasses or without?

If only one focal length is listed rather than a range, the lens is a prime lens. The Fujifilm XF 23mm F2 R WR, for example, is a 23mm prime lens. It has an effective focal length of 34.5 mm on Fujifilm's X-series cameras as they have an APS-C format sensor.

This is great. I’m a carpet cleaner and it’s often hard to spot tiny imperfections in the carpets I clean. A magnifying glass helps so much!

The Nikon Nikkor z 600mm F4 TC VR S is a prime lens with a difference. The TC indicates that it has a teleconverter built-in and that can be applied with the flick of a lever. When the teleconverter is in action, the lens’ focal length switches from 600mm to 840mm. That type of technology does not come cheap.

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Leica, Panasonic and Sigma all produce cameras with the L-mount and you can use any L-mount lens on any L-mount camera. Similarly, OM Digital Solutions and Panasonic manufactures cameras with the Micro Four Thirds (MFT) mount and any MFT lens can be used on any MFT camera.

However, although there are few exceptions, short focal length lenses are generally shorter in length than long focal length lenses.

Good Morning, I have been trying to find out how to enlarge the field of view on the 5 glass magnifying system but have not received an answer after sending two pictures of the product as requested. Since it was done with your system it does not seem to give me a way of resending them at this time. Ed Shephard.

It is better to join two 35 or 50mm , 3 or 3.5x magnifying glasses with having thin one or two washers between glasses ro avoid rubbing & using a rivet which has a split at the end & qhich is normally used on baggages. This combination of glasses works fine for reading very small written letters.

Micro Four Thirds cameras have a sensor that's smaller than an APS-C format sensor and as result, Micro Four Thirds camera give a 2x focal length magnification factor. Consequently, as 50mm lens produces an image that's comparable with a 100mm lens on a full-frame camera. This makes Micro Four Thirds cameras attractive to anyone wanting a light camera system, especially if they are keen on wildlife photography and in need of long telephoto lenses.

In addition, the R indicates that it has an aperture ring, LM indicates that it has a linear motor to drive the autofocus, while 'WR' shows that it is weather-resistant. The list of letters varies depending on the manufacturer’s naming convention, but the features are often the same or similar.

Focal length is a physical measurement, but the image framing that a lens produces depends upon the size of the sensor in the camera it is mounted on. That's because the lens needs to produce an image circle that's big enough to cover the sensor inside the camera it's mounted on.

The most important thing to know about camera lenses is that they have a specific mount, so they can only be used with certain cameras. Third-party manufacturers like Sigma, Tamron, Tokina, and Zeiss make lenses with mounts to fit a range of cameras, but Canon, for example, only makes lenses to fit Canon cameras, and Nikon only makes lenses that fit Nikon cameras.

A lens’s focal length is the distance in millimetres between its optical centre when it is focused on infinity and the sensor or film inside the camera. The optical centre of a modern lens isn’t easy to identify because the barrel conceals several lens elements.

Buying a brand name magnifier, while not always a guarantee of quality, means you can contact the manufacturer if anything goes wrong. Fancii Optics offer a 100% money back guarantee on all our magnifiers. If you are not satisfied with our product within 60 days of purchase, we will refund you your money back.CLICK TO SHOP RECOMMENDED MAGNIFIERS

5X and 6X Lenses are the most popular choices for an average user as it offers higher magnification without sacrificing the field of vision (diameter of the lens). On the other hand, a 10X magnifier will reduce the field of vision significantly, but it will give you a closer look at tiny rocks, crystals, minerals, microfossils, etc.

Most camera manufacturers use lens mounts that are specific to their cameras, but Micro Four Third and L-mounts are shared between a few manufacturers.

My mom has macular degeneration, and she’s completely blind in her left eye what type of magnifying, reader or glass would be good for her to be able to put words under there and see them. Please advise. Thank you.

This guide to camera lenses explains the most important features of a lens, including lens mount, compatibility, focal length aperture, stabilisation and more.

While this convention of using fractions to describe aperture settings (or sizes) can be confusing at first, it means that any given aperture lets in the same amount of light, whatever lens it is set on. For instance, f/8 on a 35mm lens lets in the same amount of light as f/8 on a 100mm lens.

For example, a full-frame lens is designed to project an image across a sensor that's the same size as a 35mm film frame. If this lens is then mounted on an APS-C format camera, the smaller sensor only occupies a part of the image produced by the lens.

The maximum aperture of many zoom lenses varies as its focal length is adjusted, but more expensive zooms have a fixed maximum aperture such as f/2.8 or f/4.

2) Place the magnifying glass on a piece of white paper and see if the lens adds any color of its own. Then pick it up and examine other objects, specifically objects with more colors.

A lens’ angle of view can be measured horizontally, vertically, and diagonally. The Canon RF 24mm F1.8 Macro IS STM lens, for example, has a horizontal angle of view of 44 degrees, a vertical angle of view of 53 degrees, and a diagonal angle of view of 44 degrees. In comparison, the RF 400mm f/2.8L IS USM's angle of view measurements are 5 degrees 10 minutes, 3 degrees 30 minutes, and 6 degrees 10 minutes, which are much narrower.

Lenses have an iris that can open and close inside their barrel to control how much light can reach the camera’s sensor. The iris comprises a series of blades, and the more blades there are, the more rounded the iris hole or aperture.

Lens names often seem like a long and confusing list of numbers and letters, but they are designed to spell out the lens focal length and maximum aperture along with some of the key technologies inside.

Some lenses have gyros inside that can detect movement and then a motor shifts an element (or group of elements) to compensate. This enables the camera to capture sharp images at shutter speeds that would normally result in blurred photographs. The possible reduction in shutter speed is measured in stops or exposure values (EV) and is commonly 3-4 EV.

Wide-angle lenses are popular for shooting landscapes because they enable you to capture an expansive vista, and telephoto lenses are useful for picking out distant details or tight framing of action.

Zoom lenses are very popular because of their convenience, but prime lenses generally produce better image quality than a zoom lens of a similar price. That said developments in optical design mean that zoom lenses are increasingly close to matching prime lenses for image quality.

As a result, the image captured by the camera looks cropped compared to the image captured using the same lens on a full-frame camera, or like a longer focal length lens has been used.

The picture is a little more complicated because some lenses are designed for specific camera ranges. Canon EF-S mount lenses, for instance, are designed for APS-C format Canon DSLR cameras and cannot be used on full-frame DSLRs. Meanwhile, Canon EF mount lenses are for full-frame Canon DSLRs, but they can be used used on Canon's APS-C format DSLRs.

On all orders $90USD+ we offer free 2-7 business day standard shipping in the US + CA and 11-20 business day shipping in the UK. Unfortunately we are unable to make deliveries to PO boxes, APO/FPO, or US military bases outside the US.

Most manufacturers have started to introduce hybrid stabilisation systems that use in-body stabilisation as well as lens stabilisation to extend the range of movement compensation.

PentaxPentax K: Pentax full-frame and APS-C format DSLRs Pentax K (DA): Pentax K-mount lenses that are designed its APS-C format DSLRs

Aperture value is calculated by dividing the focal length (f) by the aperture diameter in millimetres. As a result, an aperture of f/1.8 is larger than an aperture of f/2.8, and f/2.8 is larger than f/5.6 etc.

Angela is the founder of SheClicks, a community for female photographers. She started reviewing cameras and photographic kit in early 2004 and since then she’s been Amateur Photographer’s Technical Editor and Head of Testing for Future Publishing’s extensive photography portfolio (Digital Camera, Professional Photography, NPhoto, PhotoPlus, Photography Week, Practical Photoshop, Digital Camera World and TechRadar). She now primarily writes reviews for SheClicks but does freelance work for other publications.

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One of the most daunting aspects of moving up from a smartphone, compact camera or bridge camera to a DSLR or mirrorless system camera is dealing with interchangeable lenses. Even experienced photographers can find the vast array of camera lenses confusing. This guide to the most important features of camera lenses should help make choosing the right one easier.

The Fujifilm XF 16-50mm F2.8-4.8 R LM WR, for example, has the Fujifilm X mount (for Fujifilm X-series APS-C format cameras) and is a zoom lens with a focal length range of 16mm to 50mm (effective focal length 24-75mm). It also has a variable maximum aperture that changes from f/2.8 at the wide-angle (16mm) end to f/4.8 at the longest (50mm) point.

Go to an optometrists office. I bought one for my mother who has macular degeneration. It is ery hood and has a light on it. Well worth the money.

On a full-frame camera a lens with a focal length of less than 50mm is usually referred to as a 'wide-angle' lens while a lens with a focal length longer than 50mm may be called a 'telephoto' lenses. However, lenses with focal lengths around the 40-55mm range are often referred to as 'standard' or 'normal' lenses because they produce images with framing that's close to what we see with our eyes.

The X (times) factor of a magnifying glass refers to how much it magnifies. An average magnifying glass makes objects look 2 or 3 times bigger, which means it magnifies 2X or 3X. Geologists often like to have 5X to 10X magnification; however, anything higher than 10X is difficult to use in the field because the lenses are too small.

PanasonicMicro Four Thirds: Panasonic Lumix Micro Four Thirds mirrorless camerasL: Panasonic Lumia full-frame mirrorless cameras

Hi, notice on Amazon there are a plethora of magnifying glasses to choose from and very little information about quality of lenses as you point out above. But instead of beauty related products, I am interested in magnifying maps with tiny font or doing close electronics work in a hands-free mode. Do I want a headset or a floor mounted magnifying lens? The search is about! Chas