Why won't a Canon FD 28mm lens focus properly on an EOS Rebel T6/1300D?
Asked 5/10/2018
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I mounted a Canon FD 28mm f/2.8 on a Canon EOS Rebel T6/1300D using an adapter. The camera shows "F00," and the lens only focuses when the subject is extremely close; otherwise everything stays out of focus no matter where the focus ring is set. Is this normal when adapting FD lenses to EOS, and is there any way to make it work correctly?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
8y ago
2 Answers
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Your camera is displaying F00 because it has no idea what aperture the lens is using. The FD lenses don't have any circuitry or electrical contacts, to my knowledge.
So, you will not be able to have your camera set the aperture. You'll need to shoot on M and set the shutter speed via camera, and aperture via the lens.
You'll also need to focus manually.
See this question on the hard reality of adapting FD to EOS.
It will only when I'm with in 2 inches of what I'm shooting, but other then that no matter were on the focus ring I am it won't work
Adapting FD to EOS means using an adapter that has an element in it - this element tweaks things a bit but ultimately allows you to focus. If your adapter does not have an element in it, then it is effectively acting like an extension tube. Per the laws of the tube - your focus range will be drastically affected.
Originally by user67377. Source · Licensed CC BY-SA 4.0
user67377
8y ago
0
Generated from our catalog & community — verify before relying on it.
Yes—this is mostly expected behavior. Canon FD lenses are fully manual and have no electronic contacts, so your T6/1300D cannot read or control the aperture; "F00" is normal. Use manual focus, and set aperture on the lens, with exposure handled in Manual mode on the camera.
The bigger issue is the adapter. Canon FD lenses do not adapt cleanly to Canon EOS DSLR bodies with a simple mechanical ring, because the mount distances are incompatible. Without corrective optics in the adapter, the adapter acts like an extension tube, so you lose normal distant focus and can only focus very close. That matches your symptom.
If your adapter does include glass, it may allow farther focus but can affect image quality. If you're only getting focus within a couple of inches, either the adapter is the wrong type / non-optical, or the lens itself may also have a focusing problem.
So: F00 is normal; very-close-only focus usually means the FD-to-EOS adaptation is the limitation, not a camera setting.
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