Hi all:
i use a Sony A900 with Minolta/Sony/Zeiss lenses. I also have an NEX7 that I use an adpter and full frame A900 lenses. Because of the smaller sensor, and laarger image circle of the full frame lenses, ther is a "crop factor" of 1.5. Here is my question: I also use a* Pentax 645D, and have several beautiful long lenses, such as the manual focus 150, 200, 300, and 1.4x ( matched for the 300 only). These lenses all have aaperature rings, and there is an adapter ring to attach these lenses to Nikon FF. Since the 645 lenses weere designed for a medium format image circle, i would assume there is also a crop factor when used on 35mm FF? What would that crop factor be?I preordered a D800E, and purchased a 14-24 Nikkor, and 18mm Zeiss ZF.2, but nothing on the long end which I only seldom use, so the inconvenience of an adapter would not be too big a deal.
Thanks in advance
Dave in NJ
i use a Sony A900 with Minolta/Sony/Zeiss lenses. I also have an NEX7 that I use an adpter and full frame A900 lenses. Because of the smaller sensor, and laarger image circle of the full frame lenses, ther is a "crop factor" of 1.5. Here is my question: I also use a* Pentax 645D, and have several beautiful long lenses, such as the manual focus 150, 200, 300, and 1.4x ( matched for the 300 only). These lenses all have aaperature rings, and there is an adapter ring to attach these lenses to Nikon FF. Since the 645 lenses weere designed for a medium format image circle, i would assume there is also a crop factor when used on 35mm FF? What would that crop factor be?I preordered a D800E, and purchased a 14-24 Nikkor, and 18mm Zeiss ZF.2, but nothing on the long end which I only seldom use, so the inconvenience of an adapter would not be too big a deal.
Thanks in advance
Dave in NJ