Originally posted by luftfluss The fun part about old lenses is using them and seeing the results.
What he said...
Buy what you find interesting. Make art. Get rid of the tool if it does not meet your needs. Over the last several years I have gotten rid of a half dozen or so lenses because they did not meet my needs.
My LBA peaked about two years ago and tapered off substantially since then. I think I can honestly say that there are very few lenses that I would be interested in acquiring at this point. That is pretty much true in the camera realm as well. (Ha! Ha! I did lapse recently though with the purchase of a Jupiter-9 in Kiev/Contax mount, a Pentax SV body, and just yesterday a Super-Tak 55/1.8 for the SV.)
As for your list...cull the duplicates based on what you do/don't like. The Pentax-K 55/1.8 should be kept unless you find another fast 50 that you like better.
Steve
(...keeps thinking that a medium format camera should be in the mix...)