A lens mount is an interface, mechanical and often also electrical, between a photographic camera body and a lens. It is confined to cameras where the body allows interchangeable lenses.
25
votes
9answers
13k views
What is the difference between EF and EF-S lenses?
This is specific to Canon, but what is the difference between EF and EF-S lenses?
4
votes
6answers
1k views
What are the advantages to using EF-S lenses on Canon APS-C cameras?
I know EF-S lenses are "optimized" for crop sensors but what are the exact advantages to using an EF-S lens? Does it give better color, sharpness, depth of field, etc...?
In addition, do EF-S lenses ...
4
votes
1answer
1k views
Can I use the lens from Canon AE-1 on a Canon EOS 60D, with an adaptor maybe?
I have a Canon AE-1 (film) and I bought a digital slr camera Canon EOS 60D. I have lenses from the AE-1 camera, but I don't know if there are some adaptors to use so they fit in the 60D camera... any ...
7
votes
3answers
527 views
Fast telephoto primes for APS-C mounts — would they make any sense?
I can see the benefit of designing and manufacturing a wide-angle lens specifically for APS-C sized sensors instead of full-frame sensors: you will get smaller, lighter, and cheaper lenses.
But is it ...
2
votes
3answers
187 views
Is a small amount of play on the Fujifilm X-E1 mount normal?
I have a brand new Fuji X-E1 with the 18-55 zoom. The lens has the barest amount of play once mounted, rotating back and forth less than a half millimeter if I twist it firmly. I've had old Nikon film ...
10
votes
2answers
343 views
Are there new digital cameras that my old zoom lenses from my analog Yashica camera will fit?
I have an old analog camera (Yashica) with a bayonet lock and several zoom lenses for it. All of that was very high quality at the time and I would like to re-use it for a digital camera. Are any such ...
15
votes
3answers
2k views
Are there drawbacks when using Panasonic lenses on Olympus Micro Four Thirds cameras?
I'm interested in trying out Olympus' new OM-D E-M5, and since I'm used to using a normal prime (and just spent some time using one on Fujifilm's new mirrorless EVF camera), I'd like to try that ...
9
votes
3answers
8k views
Will lenses from a Rebel work on higher-model Canon cameras?
I am thinking about purchasing a Canon 60D and selling my Rebel XT and wondered if I would need to purchase new lenses? I only have two but as you all know, once you invest it is hard to not take ...
6
votes
2answers
546 views
Are there any decent telescopes for around $250 that I can mount my Canon 60D to?
I am looking to buy a telescope for about $250, are there any at that price range that can be mounted on a Canon body?
13
votes
4answers
2k views
What's the difference between the Canon and Nikon lenses mounts?
I was wondering what, if any, are the technical differences between the two mounting systems. Does one auto focus faster? Can one hold more weight? Things along those lines that make them different.
...
10
votes
1answer
261 views
How do I identify unknown thread mounts?
A local thrift store is selling a macro bellows with thread (screw) mounts. The mount is not identified. I have a cheap digital caliper. What are the likely mounts that it could be, and how can I ...
6
votes
2answers
603 views
Pentax to Canon Adapter
My dad has an old Sears KS-2 + 50mm f/1.7, which from a bit of research seems to use a Pentax K-mount.
I've looked around a bit and found a Pentax to Canon adapter, which says it supports ...
5
votes
2answers
176 views
How loose can the lens mount be?
I've noticed that there is a little give in my camera system at the EF mount. It is really hard to see, but I can feel it sometimes and first noticed it when I had the lens attached to a monopod and ...
4
votes
2answers
454 views
Can I use my existing Canon lenses on an EF-M camera body?
Canon recently introduced the Canon EOS M, mirrorless interchangeable lens camera. It uses a new EF-M mount and is available as a kit with an EF-M lens in some regions. I have existing EF and EF-S ...
2
votes
3answers
498 views
How does a short flange back distance improve image quality?
In the description for the new lens mount for their X-Pro series, Fujifilm says:
1: Specifically designed to maximize the mirrorless design of the body, the X-Mount has a short flange back ...
