44 votes
Accepted

Can I use lens brand X on interchangeable lens camera brand Y?

You're probably better off with native-mount lenses For the most part, no, you can't mix'n'match lenses from different brands of cameras, because they'll usually use different mount systems. The mount ...
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  • 49.2k
23 votes
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In what way does the lens mount limit the maximum possible aperture of a lens?

There are two hard limits on how fast a lens can be: The first is a thermodynamic limit. If you could make a lens arbitrarily fast, then you could point it to the sun and use it to heat your sensor (...
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  • 3,335
22 votes
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What is this old 50mm f/1.9 lens?

Your lens is a Yashica ML 50mm f/1.9. The one pictured below is a more recent version of the same lens. The mount is the CONTAX/Yashica mount. Yashica revived the Contax name over a decade after ...
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  • 168k
17 votes
Accepted

How do SLR lenses connect to the body?

if I use the auto-focus, does it adjust the lens focus, or is there a secondary lens in the body that gets adjusted? No, there's no secondary lens. The lens attached to the camera contains a motor ...
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  • 31.2k
16 votes

Can I use lens brand X on interchangeable lens camera brand Y?

The most important thing you'll need to know is the "lens mount" that both your lenses and your body use - examples here are Canon EF, Nikon F and Micro Four Thirds. Once you've done that, ...
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  • 19.9k
15 votes

Does a large mount diameter really allow design advantages for large aperture lenses?

First: Sony doesn't necessarily disagree with Nikon's claim. It's just that Sony designed their 'E' mount with a throat diameter of 46.1 millimeters at a time when it appeared it would be an APS-C ...
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  • 168k
14 votes

How to fix a bent lens mount hook/tab?

The first thing you need to ask yourself is, "Am I sure the only damage to the lens is to the mounting flange?" The second thing you need to ask yourself is, "Considering the cost of a new EF 75-...
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  • 168k
10 votes
Accepted

Are there any official specifications regarding the torque for camera mounts?

I'm sure each manufacturer has a specification for the amount of force along several axes that their lens mounts need to be able to accommodate, but they don't seem to publish that data. They are ...
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  • 168k
10 votes

How to fix a bent lens mount hook/tab?

Check if you can somehow get this replaced/repaired for free by some expert due to warranty, insurance, etc. That would be the best solution. Find out the price that an expert repair costs or at least ...
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  • 8,334
10 votes

Does a large mount diameter really allow design advantages for large aperture lenses?

Using your thumb and forefinger on each hand, make a finger frame, and hold it out at arms length. Now imagine that your entire field of view is limited by the bounds of this finger frame. Anything ...
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  • 31k
9 votes

Mounting Sigma 70-300mm 1:4-5.6 APO Macro Super on Nikon D3200

The Sigma 70-300 mm F4-5.6 DG APO Macro is a lens that is available for both Sigma cameras and as a third party lens for many other brands, among them Nikon. These different manufacturers uses ...
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  • 8,148
9 votes

Which mount is this Sigma lens for?

I think you've got a Minolta A-mount lens. Compare to this photo (image borrowed from here): Minolta and Konica merged at some point and were subsequently acquired by Sony, and this mount is ...
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  • 31.2k
9 votes
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Can I use a Sigma 17-55 2.8 lens on a Canon 6D?

Will the sigma 17-55mm 2.8 lense fit my full frame canon 6d ? The lens that I think you're talking about is the Sigma 17-50mm f/2.8 EX DC (OS) HSM. Although any lens with an EF mount will fit your 6D,...
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  • 31.2k
9 votes

What is this old Zeiss Tessar lens, with a large mount ring with six holes?

This is a "process" lens used to make copies on high contrast film for reproduction in newspapers, magazines, and books. The lens mounted on a square wood board with hole for the lens. The lens ...
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  • 36.3k
8 votes

How do SLR lenses connect to the body?

As Caleb pointed out, all focus and aperture-related functions (as well as optical zoom when relevant) happen inside the lens, not in the body (in terms of lens components moving at least, not talking ...
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  • 317
8 votes
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What makes RF lenses better than Canon's EF lenses?

Like most mirrorless systems, the RF mount has relatively short flange focal distance, of only 20mm, as opposed to 44mm of EF (and EF-S). This has a number of optical advantages, better allows for ...
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  • 140k
7 votes
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Camera bodies with a EF-S mount

No. All Canon cameras that accept EF-S lenses are also 100% compatible with EF lenses. A camera having an EF-S mount simply means that you can also attach EF-S lenses to it - the limiting factor is ...
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  • 1,626
7 votes
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Can I use a D.O. Industries Navitron 50mm f0.95 lens on a Nikon Camera?

No. There are several problems here. This lens looks a lot like the Senko 50mm f/0.95, i.e., it is a C-mount lens for 1" format video. This lens vignettes even on micro four-thirds (2x crop). There's ...
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  • 49.2k
7 votes
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Is it coincidence that Nikon F lenses can fit a Canon EF body (with an adapter)?

If you read Canon's public statements at the time the EOS system/EF mount was introduced in the late 1980's, they spoke of the longer 44mm registration distance and larger diameter flange of the EF ...
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  • 168k
7 votes
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Are lenses for Nikon's D5xxx series compatible with the D7xxx series too?

Short answer: Yes. The models all have DX sensors, and since the lenses were bought for a D5300/D5200, they'll likely have an AF motor built in, so you won't have problems mounting them on any other ...
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7 votes

If my Nikon DSLR camera came with a non-VR lens, do I need to buy a new camera to use VR lenses?

Your camera is an interchangeable lens camera. You can buy other lenses with the Nikon mount and use any of them. That includes lenses with VR — vibration reduction — even if the lens which came with ...
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  • 140k
7 votes

What lens mount does my Fujinon135 f/3.5 lens have?

X-Fujinon says it all - that's Fujica X-mount, the one Fuji used on their SLR cameras from the early 1980s, before current mirrorless X-mount. Fujica X-mount has focal flange depth of 43.5mm, so ...
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  • 366
7 votes

APS-C lenses on full frame Mirrorless bodies

Since the adapter moves the lenses further from the sensor, I’d imagine that the coverage of the lens would be larger, and that the adapter or body alters focus to compensate. Is this thinking correct?...
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  • 168k
7 votes

Nikon 18-300mm will not mount to body

I just found the issue, upon closer examination of where on the ring it was not seating, ONE slightly loose screw! Hope this helps someone else!
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6 votes
Accepted

Is there a comprehensive list of available (possible) adapters between different lens mounts?

A good web store like B&H has a list that seems to satisfy that criteria. http://www.bhphotovideo.com/c/buy/Lens-Adapters/ci/3420/N/4077634486 There you can use filters like Brand (manufacturer) ...
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6 votes
Accepted

How do I separate a stuck Nikon 400mm f/2.8 AF-S (non-VR) lens from a D800E body?

I have had this happen twice on my D800. To release the lens is simple. There is a service port, or cut-out, that is visible in front of the lens release. A thin bladed screw driver inserted into this ...
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6 votes
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Change aperture of EF lenses without an EOS body

No, there is currently no battery powered lens cap sized aperture control devices for EF lenses. There are some cheap "dumb" (mechanical only) adapters that feature their own built in iris. But it's ...
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  • 117k
6 votes

Where can I find the maximum camera weight for my lens?

It's not just the weight of the camera that's a concern, but the torque that it will apply to the mounting ring on the lens (and in the camera, of course). Torque is turning force, and it's ...
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  • 31.2k
6 votes
Accepted

Will a DX lens have severe vignetting on a 20x20mm?

The only guarantee is that a DX lens will throw an image circle approximately large enough to cover a DX sensor. Some throw them a bit larger, but the only way you'll know if a given lens does that ...
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  • 5,412
6 votes

What mount system is this Hanimex zoom lens?

This lens was manufactured in the Canon FD (and new FD), Nikon F, Minolta M/MD, Pentax K, Fujika FX, CONTAX/Yashica (C/Y or Y/C), Konica AR, Olympus OM, and M42 mounts. Your lens is not any of those. ...
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  • 168k

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