Re: GXR M Mount, adapter and vintage SLR lenses

Blow-in wrote:...then acquire some cheapish lenses to give a wide to...
Richard
Richard I don't know how wide you want, but if it is anything like 24mm or 28mmm equivalent I want you to consider the following:
From my experience imo legacy SLR lenses don't offer good wide angle coverage on APS-C sensor cams. There is a well respected Vivitar 3.5/17mm ( which also comes as Tokina ), the 20mm Flektogon and 20mm Mirs, but all are quite big, heavy, not cheap and imo not all that great after all. Pentax M4/20 is small and so is the good Zuiko OM 3.5/21mm which already is real costly, as is Nikkor 20mm and even more so OM f2/21mm.
In short, they may cost a bit dearer again than most though not all mentioned above, but for the wide end consider the tiny and very well performing Voigtlaender Heliar f4/15mm and Skopar f4/21mm.