leonasj wrote:
irix 45mm f1.4 is very heavy 1100gr, and sharp only from f2.8 and it is FF lens with gfx mount only,not cover gfx sensor? , mamyia 55mm f2.8 is autofocus lenses?
Who says the Irix 45 f/1.4 is only a FF lens? That is not what they say. It is a very heavy lens, but I think a good one. It has some SA at wide apertures, but that can be nice at times for a certain look and as you say it sharpens up nicely from f/2.8 which is still pretty fast on a 44 X 33 sensor. Mamiya 645 lenses come in three generations. Both the first and second generation were manual focus and are great options for the GFX. The newest generation is for the Phase One MF cameras and they have very rudimentary AF and are very expensive. I don't think you can even adapt them to the GFX with aperture control. What I was recommending is the first or especially the second generation manual focus lenses with an N designation. If you want to read more about Mamiya 645 lenses here is the wiki page for them:
