Digital BW, The Print

> > Surely every pixel on a digital camera (except
> > for a few exotica) is interpolated?
>
> No.

YES.

> Normally each pixel in the output image corresponds to a physical
> pixel
> in the CCD.

Anthony, you're doing it again.  You're trying to talk authoritatively about
something you don't seem to understand.  AND...you're responding to a
question with an answer that, though your "answer" just so happens to be
somewhat true, has nothing to do with the actual question.  Fact is, EVERY
output pixel of a Bayer pattern CCD camera IS interpolated, period.

The CCD has SENSOR elements, not pixels.  Pixels are the result after the
sensor information is interpolated.

> The only interpolation that occurs is for color, since each
> pixel has a color filter over it to restrict incoming light to
> red, blue,
> or
> green (with green being twice as common as the other two
> colors, since the
> eye is more sensitive to it).

Since the image sensors only give ONE value for each sensor location, and
each sensor location is only ONE of three colors, how is the "color"
information separated from the luminance information at the sensor level?
Answer is, it isn't.  EVERY SINGLE output pixel (which contains RGB
information, not chrominance and luminance information) is derived via
interpolating the sensor data.

Austin