Digital BW, The Print

> Hmm, that raises an interesting point.  A scanning back operates like
> a film scanner, with seperate RGB sensors scanning the image.  I have
> not thought about this before, but I assume this means that there is
> therefore no interpolation with a scanning camera back, so its
> resolution should be regarded as 3 times that of an equivalent single
> shot sensor.  Would that be right?
>
> Bit OT, but I'd be interested in the answer :-)

You are correct that scanning backs require no color interpolation, and full
frame sensors do.  It really isn't 3x, since color information really isn't
as important as luminance information (or your color TV wouldn't work near
as well ;-), but having both a scanning back and a one shot back of the same
"size", there is a marked difference in image quality with the scanning
back...but it's hard to tell what effect other elements of the equation
have.

What would be a good experiment would be to take a scanning back and treat
the data just like a full frame CCD, and make an image that way.  It would
take a bit of work...but none the less, would be a very definitive test on
that methodology.

Austin