Butch Black mused: > > Hi > > The thread about the MF based Pentax DSLR got me thinking, (always a > dangerous proposition) > > First, the question. If building a body for use with Pentax MF lenses, would > the flange to sensor distance be the same as the flange to film distance in > the film cameras?
Well, yes, naturally. The lens doesn't know what material the sensor is made of - film, CCD, CMOS, whatever. If an image is in focus on a piece of film at a given distance from the lens, you need to put an electronic sensor in exactly the same place to get an in-focus image. (Note that the register distance of K-mount lenses is not the same as the register distance for 645 or 6x7 lenses) > If so, wouldn't it be possible to design a body marginally larger then the > ist-D using either a FF 35mm sized sensor or Kodak's 40x40mm sensor with > adapters for 67, 645 and 35mm lenses. You wouldn't necessarily be able to use K-mount lenses with a 40x40mm sensor without vignetting; you need a 43mm image circle for a FF 35mm sensor, which might not cover the 56mm of that larger sensor. > HEY PENTAX. If you're reading this list and use this Idea, you owe me one of > them for the idea :) Too late - I suggested a body capable of accepting all those lenses a few days ago in an earlier post to this thread.
