Originally posted by tux08902 I doubt there is a significant difference between 1.9 and 1.7. People have said that 2.0 and 1.7 aren't all that different in terms of the fifties, that low-light performance between both is outstanding. So, I wouldn't use that as a deciding factor in this trade. I simply wouldn't go for it because the FA 43/1.9 Limited outclasses the F 50/1.7 by far.
"outclass" would be a farcry, i think... there is so much to a lens, and all of these are going to be sharp, they are all going to render colour, and they will all have bokeh, nitpicking as some do about "bokeh" quality gets astronomicaly more complex than it should be..
FA43, a Chinon 50mm and an FA35
all cropped to almost identical fields of view, off a tripod, ISO 200, F5.6 for all....
which one is which? ahh? ahh?