I am working on a project for which I'd like to use some of the Rollei Schneider PQS HFT lenses. Does anyone know if I'd be able to apply manual aperture settings on those lenses without them being on a Rollei body - in other words, can the lenses be used i.e. with and adapter on say a DSLR including stopping down the lens manually or is this possible to do via Rollei electronic control only (i.e. is there a depth of field preview function on the lens etc.?)
Also, when goggleing lenses like the 40mm super angulon, I can't find any reviews that gives any hints on how they do on modern digital sensors in terms of resolving power, CA etc. Does anyone have experience with such a combo in the real world and / or do you know of any tests / comparisons?
Thanks in advance!