does anybody know if any 1.4 teleconverter is compatible with my old Canon 100/300 f5.6L?
I would like to still have autofocus as the manual focus on this lens is just awful to use.
I read that the canon 1.4 will not do that as it only autofocuses with zoom lenses aperture f4 and larger. Is that correct.
Somewhere else i read that some cheaper kenko converters sometimes work even with zooms of 5.6 aperture.
Is there a list or some table in the internet to look this kind of stuff up?