Originally posted by ironlionzion
I mean, the going rate for Cosina/Revuenon 1.2s is 400 dollars. Last year it was 300 tops. A couple years before that it was in the 100s.
Serious? I bought and sold the Cosina 55/1.2 a 2-3 years back for $200~. It was overvalued then, at today's prices, if you are right, utterly foolish - except that of course if you can sell it for more than you paid for it well then more power to you I suppose.
The Cosina is roundly beaten, taken to the cleaners and back again, by the Takumar 55/1.8. It's only party trick is the "soft glow bokeh balls at f/1.2" thing, and trust me that's amusing for all of a half hour or so before the lack of anything resembling sharpness or contrast become unbearable and you put the lens down in disgust. It also flares out at the drop of a hat. I actually spent a fair bit of time trying to find any kind of reason to keep it around - artistic effect, that kind of line - but could find none of any merit.
Moral of the story: beware the enticements of third-party ultra-fast optics.