Originally posted by wkraus Edit: I just noticed you used different cameras for the comparison, so that might also account for the small difference in saturation. Both lenses are quite nice I would say.
Cameras share the same sensor, but noted also the difference in darkness of the lenses, so I took one comparison shot with just one camera body. I used same adjusts on both lenses and 85 came out clearly lighter or maybe it would be right way to say that there is less contrast in 85. I lowered the exposure of 85 shot by -0,4 in post to place most of the histograms in same positions, but the highlights of 85 are lower at that point. Therefore I'd say that difference is more due to lenses than camera body's.
100 is a good lens and has nice rendition, but not quite as sharp as 85, 50 or 300. In simple scenarios and good light, like the flower shot, it performs well. If there is a lot of small detail, especially with strong contrast, then the 100 struggles and results in somewhat smeary shot which doesn't quite reach the 3D feeling I've come to expect from M's. On the other hand there is more PF in 85 and it's 2,5-3 times more expensive. It seems that the reason why I haven't been satisfied with 100 is just that sometimes I have used it in unfavorable situations.
All Shots with K5 and M85/2:
The candle in daylight
The candle in nighttime
Portrait