COSINA (color-reflex) fault

Pancolart · Expire: 2013-11-18

This has to be said. Whole series has one of the worst focusing lubricants ever used. I managed to make few of the lenses stuck already. Lenses were frequently sold as PORST Color-Reflex (including 1.2/50mm PK), i have Vivitar VMC 3.5/135mm before me of the same family. Anyway let it be noted these are very good lenses otherwise. I especially love 2/28mm Cosinon.

8310 · Joined: 05 Jun 2010 Posts: 123

+1

I own a Cosina made Petri 50mm/1.7. The focus ring was completely stuck when I got it. I relubricated it and now it runs as smooth as butter.
I was surprised of its center sharpness. For close distance, it puts my Pentax M 50mm/1.7 to shame. It is much weaker in the corners though (on crop).