rehess Loc: South Bend, Indiana, USA

If you do experiment with these lenses, you need to recognize that all lenses manufactured "back then" were built to a different standard; various optic qualities were more important to them than 'corner to corner sharpness' {which is all some people look at today}

graybeard

I think everyone knows these lenses are not A1 in optical quality. That is, I'm told, part of their charm. My concern now, as I look deeper into this, is that a lens such as the Industar 69 mated with an M39-EOS adapter may not focus to infinity on my camera. They say you can modify it, but I am not sure. As cheap as these things are, I am too much of a cheapskate to buy something that may not work !!!

Peterff Loc: O'er The Hills and Far Away, in Themyscira.

You need to look at the flange focus distances: http://briansmith.com/flange-focal-distance-guide/

If the camera lens ( say Canon EOS at 44mm) is less than the lens (say 45.46mm), then it's not a problem, a simple adapter will do, but a Canon FD at 42mm will not focus to infinity without corrective optics (usually less than optimal) or a replacement mount which can be excellent, but tricky and costly.

As I said earlier, I would not recommend modifying old Canon glass to modern Canon EOS cameras, but it can be done - I have several - but I'm not a sadist, and you have to be a bit of masochist to choose to do it!

http://www.uglyhedgehog.com/t-246186-1.html

graybeard

None of the manual lenses I use are FD mounts. Most are M42 screw mounts, as I used Pentax, Praktica and Mamiya/Sekor cameras. Another is an Olympus mount. I would never try a Canon FD, due to the added glass, and to mount a Nikon on a Canon is some form of beastiality.