The difference is ~2mm in Pentax's favor. I don't know what the tolerances are but it seems to me that you would expect a 46mm opening for Pentax vx 44mm opening for Nikon. This implies that it would be unwise to attempt to mount a Pentax lens on a Nikon body unless you are willing to risk damaging the lens the camera or both. I happen to have a Nikon T mount that fits nicely into a K bayonet opening jiggles around a bit and threatens to not come out. The K to F mount adapter I heard of had a female Pentax Mount with a male Nikon mount right behind it. You will lose infinity focus if you use this device.
Adam Maas wrote: > Actually, the mounts are approximately the same diameter, and that has > nothing to do with focusing (which is controlled by the register, which > is longer on F mount). > > You are correct that there are adaptors floating around. But they're > rare and useless for non-macro work. > > -Adam > > > P. J. Alling wrote: > >> Short answer. Yes. But since the Nikon lens mount is a narrower opening >> than the K mount it won't be able to register the correct back focus and >> the lens won't achieve infinity focus. So the adapter is of limited use. >> (I've never seen one by the way, only heard of them). >> >> Rebekah wrote: >> >>> ok, don't shoot me, but does anyone know if there's an adaptor that >>> will enable pentax k-mount lenses to fit on a digital f-mount nikon >>> camera? >>> >>> I swear, a friend is the one who wants to know! >>> >>> rg2 >>> >>> >>> >> > > > -- Remember, it’s pillage then burn. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
