thanks
 

Thanks Steev, I'll talk to Redrock.

Dear Frank, it's not a dslr lens. It's a very, very good analog slr lens, that I've tested on slr bodies, check it here: http://www.kenrockwell.com/nikon/1735.htm

kind regards, soren

Nice piece, but how it behaves by small irissizes. Not too small, because under(over) 5.6 You'll certainly see huge amount of grain but right before that ...say 4.0?
Method that Steev talks about isn't getting rid of vignetting but hotspotting. So if You have actually hotspot then it works.