1.4/50mm PK comparison: CHINON, COSINA, ASAHI, RICOH

[Pancolart]

Fast simple comparison with counterlight. All wide open, all 1/320s at ISO 100 & Pentax K10D.
Made few shots with each so i could select best photo (in focus). Lenses healthy and clean.
Though all finished in few minutes there was some difference in background light.
At first sight no strong and decisive difference i dare saying.

RICOH XR Rikenon

ASAHI Pentax-M SMC

CHINON (Revuenon)

COSINA COSINON

COSINA PORST

[ChromaticAberration]

Pentax wins here. The tube is the perfect subject, there are clear differences in the borders. Bokeh is pretty much all the same.