Originally posted by Vicioustuna2012 why couldn't my camera accommodate the entire frame?
As far as I understand it, it is because the slide copier is set up for use on 35mm equipment - the lens is fixed focus, so has to be used at the same distance from the focal plane. I experimented with extension tubes, and was unable to focus at all, whilst a (cheap) tele-converter merely increased the size of the already-cropped image. I have seen on ebay a Pentax bellows / slide copier combination, which may do what you require, but as I have never used it (and at the prices required, probably never will) I can give no personal experience. FWIW, I suspect that the same caveat would apply, as again this was designed for use on the 35mm format, and would probably only cope with enlarging the slide, not, as would be necessary in the case of digital, reducing it in size. I don't know if it would be possible to obtain acceptable results using the bellows and a lens of less than 50mm focal length - perhaps an expert in optics could advise here?