Rokkor 45mm
Not sure why that guy is so surprised. There have been about a bazillion really sharp ~50mm f/2 lenses over the years and a lot of them are cheap now. The Pentax SMC series were also really good and my Konica hexanon was also pretty great!
+1. Minolta SR lenses are known to be good and the 50s are not expensive either. Hardly hidden gems…
SMC Pentax-M 75-150mm
75mm
150mm
Test with some measurements
Big note - it is individual old lens review, and it looks like not best sample.
Tokina SZ-X SD 28-105mm f/4-5.3
50mm
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