> Only the EOS-3 and 1V will auto focus to f8.0, which is what an f5.6
with
> 1.4 TC becomes, all other current EOS bodies requires effective
aperture
> f5.6, which renders AF non-functional when the EF100-400 is used
with either
> Canon TCs or any 3rd party TC (usually their "Pro" models) that
actually
> pass the effective aperture information from the lens to the camera
body.
A small piece of electrician's tape, strategically placed, will
overcome that: allegedly.
My "friend" tried it and it works. However, I couldn't vouch for that
so any damage resulting is entirely on your own head.
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