I wrote a long explanation of the process, and it was a mess so I deleted it.
The simple explanation is that each pixel location on the sensor only gets light of the colour that is assigned to it. It comes off the sensor as luminance only, but it is not the same as a greyscale image. Converted to RGB without interpolation, it would have a luminance value ONLY for its assigned colour, the remaining colours would have zero luminance at any pixel. A white field from the bayer converted with no interpolation would look like: 255,0,0 - 0,255,0 - 0,0,255 - 0,255,0 - and so on. After interpolation it looks like: 255,255,255 - 255,255,255 -255,255,255 - and so on. The luminance data for the unrepresented colour channels is taken from the neighbouring pixels that represent the missing colours. That data has spread from its own position to the adjacent pixel. That's interpolation. regards, Anthony Farr > -----Original Message----- > From: Godfrey DiGiorgi [mailto:[EMAIL PROTECTED] > (previous message sinipped) > > Spatial resolution, captured as luminance, is not interpolated. Color > value, captured and rendered by the Bayer, in interpolated. DOF has > to do with spatial resolution, not color value. > (snip) > > Godfrey
