I found my grandpa Helios 40 85mm/f1.5 and ordered adapter to EOS. i was surprised watching it go for 600$+ at ebay.
Which of old mounts lens you loved with eos dslr the most?
i'm interested in primes 20mm and wider and longer than 180mm as well.
i'd appreciate if you have comparison shots of mf and ef glass (similar focal length/aperture)