I felt the need for a 50mm prime - which I have been without for a while - and went on a shopping spree. So now I have Minolta MC 50/1.7 (eBay), Minolta MD 50/1.7 in 55 mm filter diameter, SMC Pentax-M 50/2 and SMC Pentax-M 50/1.7 (all CL finds, cost me peanuts). That 50/1.7 Pentax is very nice, as sharp as Minoltas but lighter and smaller and with less warm colors (so in some lighting situations it actually seems to produce better / more accurate skin tones). Now, I also located an Auto-Takumar 55/1.8 on CL, for $20. The owner says it's in great shape. I would need an adapter for it since it's a M42 mount lens. I assume it's an earlier version (not "SMC"). The question is - would there be a good reason to get it now that I am aflush in 50's ? I read all the reviews I could find but very few of them are comparative. The focal length is a bit longer than I'd like. Any opinions ?