Originally posted by Jonathan Mac I see that like me you've now got the trio of short-ish, fast M primes - 85/2, 100/2.8, 120/2.8.
I keep thinking that I should do a comparison between all three but so far I haven't gotten around to it.
I made some comparison shots and posted some of them here when I bought 85 and 120. They can be found on pages
415 and
416. My conclusion is that 100 is not quite as sharp as the others, but difference is so small that in most cases it's hard to see without pixel peeping. It's most obvious when there is high contrast in fine detail in the shot. 85 draws lighter than others and it has a special bokeh.
100 is good, but 85 and 120 are even better. I think I will chance my 100 to macro version when I can find one, as I don't have any macro lenses at the moment.