Originally posted by monochrome In my observation the version of SMC used on K-series lenses renders noticably warmer than the versions on M and later lenses - the A lenses seem particularly cooler to me, especially the 50/1.4.
I agree... but even in my limited experience, which is nothing compared to yours, I've seen exceptions. The K 24 2.8 that I had rendered somewhat cool for a K lens, and my A 70-210 f4 renders warmer tones than I would expect, especially considering the A coatings do bring out some beautiful blues but that doesn't cool down the entire image.
I'll agree that the A 50s have a rendering that is almost too cold, my experience being with the A 50 1.7 but I've seen the A 50 1.4 rendering similarly.