I am looking to purchase a cheap used FD lens
Canon FD 35-70mm f4 this will also need an EOS to FD lens adapter for my canon 7D
I will be shooting some video and would like to manually focus and zoom; while I shoot the video there won't be any zooming so I am not worried about a flicker.
Could you advice me on the same? Any negatives; possible problems I might face trying to work with this combo? I am concerned about the difference in focal length etc that the adapter would cause and what sort of range or results I could expect?