> Comments/advice regarding the above two lenses specifically in
> bokhe, resolution, contrast, sharpness will be appreciated as "My
> Lens Resolution Test Results are silent in comparison on both.

I have little to offer, since I don't use either lens regularly.
However, I did test some M 50/1.7's along with a K 55/1.8 (for
resolution ONLY), along with a bunch of other 50-ish lenses, at
http://www.cetussoft.com/pentax/50's/resolutn.htm .  Since the
55/1.8 is the same lens optically as the 55/2 (just a difference in
baffling), this might be of some use to you.

Fred


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