Thanks Tony,
I check again the page and read better, slow english reading...hehehe
Yes, the FD is older than Canon EF, and still very good manual lenses, like this good web site have described:
An adapter from FD to M42 I know exist, but there is a problem first ...the registration distance from the SD14 sensor is already closer even without any adapter between lens and camera, and even if I lay an FD lens on the SD14 mount, is incorrect ....I need to go inside of 2mm ....huuhhhh
Infinite will never be possible if I not respect the registration distance, and if I will use thick adapters, the only possibility is by having a lens in the adapter that corrects all ....an example is the adapter for mounting FD lenses on EF (EOS) cameras:
don't think it's so good, a friend have it on his EOS 5D, and lens seems loosing sharpnes and Fstop, bad for very bright good lenses like 85mm f1.2.