Wollensak 25/1,9 velostigmat

Shots on Sony NEX5

interesting OOF, mercedes like

on Olympus E PM1, too bad, not reach infinity

Kern Paillard Switar AR 25/1,4 Cmount

Kern Paillard Switar AR 25/1,4 on Olympus EPM1
You can see fall off on corners. This was at closest distance and wide open. If I turn aperture to smaller it become vignette, getting stronger in smallest aperture. All wide open.

This is not in minimum focus distance, you can see vignette getting stronger than 1rst picture.

Carl Zeiss Distagon 25/2,8 Rollei QBM mount

I got this lens in original state. as we know, focusing infinity of Rollei lenses mount has problem with adapter available for DSLR. so at the moment I cannot shot infinity at wideopen to f8. I can achieve infinity at f11.

wide open at close distance performance is amazing. the color and contrast too. see sample below

There's no words that show coating (eg. HFT or T*) in this lens. as for as I know, HFT mark was request from Rollei for their camera. T* is original Zeiss coating.
Then why there's no such mark on this lens? just my opinion, this lens is in Rollei mount, so no T*. I think Zeiss made this lens as sample for Rollei, or in other word they made not by request.
We can see the lens is coated. and its performance show it.
I cannot see CA with this lens. yet. cool!

Using Lens turbo with this lens

good lens to shot product like this. available light, no flash or additional light.