Originally posted by Pentaxor I dunno, but everytime I visit ebay, CL, and the marketplace, the 1.7 goes $50+ more than the 1.8. the norm usually for the 55/1.8 is from $40-$100, while the 1.7 from $80-$150 which is ridiculous. I'm not sure how the 1.7's market price became that ridiculously inflated. although as long as the 55 is cheaper, I can't complain.
I feel that it has to do a little with sharpness and colour pop. I hear a lot of people comparing lens sharpness, contrast, etc. Sometimes those things are nice, sometimes they are not. However if this is your criteria, then the 50 1.7 would win over the 55 1.8.
My experience is that the 50 1.7 is sharp, at the cost of bokeh. So it's very useful for a lot of things, but is not nearly as moody as the K 55.
Appropriately emo K55 shot
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