I've caught the MF bug

Started Jan 22, 2014 | Discussions thread
Forum ProPosts: 10,147
Re: see this compatibility list for MF lenses and 5D/6D bodies
In reply to NancyP, Jan 22, 2014

NancyP wrote:


The reasons for incompatibility are noted, and 20mm f/4 is on the don't use on full frame list (orange boxes). Yep, the problem is as you indicated. Lens is usable on APS-C

This list is "the Bible" for manual focus lens use on Canon FF cameras.

This so called "bible" talks about a 20mm f4 pre-Ai, the lens talked above is a 20mm f4 Ai-S. The backs are not the same.

Also, the 5D (original) has a different shape mirror box bottom around the contacts. The 6D/7D/70D/5D mk III all have a recessed surface above the contacts, which the original 5D "lacks".

So, don't trust that "bible" too much.

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