Info needed about a particular lens

Can antbody tell me what this lens is ?

Prost branded, 55mm, F1.2, manual

I have looked on the net and cant fins any info

Thanks Pete

I'm pretty sure its a mistype of Porst

They were (are?) a German lensmaker I believe and you see their lenses come up on evilbay every so often. I've only seen the 55 1.2 once, it went for a lot more than the $18 the guy testing the K10D got his for, mainly on the strength of its F1.2 maximum.

from what I have read they are not as good as the SMCP version, but quite acceptable if you can get them at a good price.

It'll be full manual, no electric contacts so stop down metering only and manual entering of focal length.

Porst is/was actually a German store, which sells/sold lots of different things under it's own brand name.

Some Porst-branded lenses were OK, some were fairly dire.

G

Pete,

any of the SMC Pentax-K/M/A/F/FA/DFA 50mm (1:1.7, 1:1.4, 1:1.2) ought to be as good if not a lot better than the Porst 55mm 1:1.2 although I have no personal experience of the latter.

There is also a SMC Pentax 55mm 1:1.8 but they seem to be pretty rare nowadays. I sold mine a while back and got the 50mm 1:1.2 instead Brilliant lens. A little soft wide open but sharpens up nicely when stopped down a tad.