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DPChallenge Forums >> Hardware and Software >> FD/EF lens mount
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09/26/2008 09:29:34 PM · #1
Has anyone tried these before. Whats your verdict, are they worth investing in. Whats the quality like with a FD lens compared to an EF.

Basically, what are the ups and downs.
09/26/2008 10:47:34 PM · #2
An FD lens will not natively mount to an EOS camera. FD is Canon's previous mount design. There are ways to mount them:

- Use a mechanical adapter (but you lose infinity focus)
- Use an adapter with an optical element (but optical quality is degraded)

In either case, the lens would be completely manual; no AF, no aperture control. Neither is worth the effort, really.
09/27/2008 01:16:19 AM · #3
Originally posted by kirbic:

An FD lens will not natively mount to an EOS camera. FD is Canon's previous mount design. There are ways to mount them:

- Use a mechanical adapter (but you lose infinity focus)
- Use an adapter with an optical element (but optical quality is degraded)

In either case, the lens would be completely manual; no AF, no aperture control. Neither is worth the effort, really.


Amen to that. I have some FD lenses from my A-1 days. I asked the vendor if the lenses could attain infinity focus, since there was no optics in the adapter. Why sure they can. I gather their interpretation is that, the lens barrel will still move to the infinity setting, and something somewhere will be in focus. Unfortunately on my 50mm 1.4, it is about 6 feet away, at that point. On the other hand, it did turn it into a nice bright macro lens, so it wasn't a complete waste. More like only a 98 - 99 percent waste. I'm not interested enough to go back and buy a different adapter with optics. The lenses I have now, 28-135 and 70-300 suit my needs. If anything, I'd put money away for some L glass.
09/27/2008 01:28:33 AM · #4
Because the focal plane is a little closer to the lens mount in a Canon camera, you can get an adapter to fit it with Nikon lenses.
Like kirbic said though, it will still be a major operation to focus and shoot stopped down. At least the Nikon Ai series lenses link the aperture ring to the aperture when they are off the camera. Instead of being in the minimum aperture position off camera (Canon FD) the Nikon Ai lenses adjust the aperture to whatever you set the aperture ring at, even off camera.
Best of luck with this, and have fun.
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