Awesome, so film EF lenses will work with the 400D, and will also have autofocus?
And all ED lenses would need an adaptor, and have only manual focus, correct?
What's the adaptor I'd need?
Keith,
Just to get the terminology straightened out....
EF lens are electro-focus....not film or digital specific, simply a lens and any Canon EF lens is compatible with today's digital bodies no matter when it was manufactured.
ED lenses...I'm guessing that you mean FD lenses which were the previous generation from Canon and operated with a mechanical aperture but manual focus.
Adaptors are made and there are two varieties;
The first type are simply mount converters which allow FD lenses to mount on your EOS body. They contain no glass but the downside is that infinity focus isn't possible....the maximum focus distance will vary with the original focal length of the lens in question.
The second type of adaptor has a corrective element which allows infinity focus but has a detremental effect on the quality of the final image. Back in the eighties, Canon made an adaptor that gave reasonable results but obviously impacted EF sales so it was stopped....one of these rare beasties comes at a premium (pricewise).
I use a glassless adapter for some macro lenses and other equipment I have but inifinity focus isn't required.
In short, you'll be disappointed with the results from an FD lens on an EOS body unless you're working close up. If you are still considering the use of an adaptor, get back to me and I'll dig out some info.
Edit....lots of posts whilst I was typing...hence the duplicated info
Bob
