Digital vs. scanning

[P3D Gavin Stokes <gstokes@xxxxxxx>]

Greg Wageman said:

"But I still don't believe (and I'd like to be shown otherwise) that a
slide scanner in the same ballpark is going to produce a significantly
better image.  And certainly not an "INFINITELY" better one.  To get
a significantly better image, you need a much higher resolution imaging
element, and those cost big bucks."

It may not be valid to compare a scanner's element to the pickup in the
camera.  A camera grabs the entire frame at once, so the image resolution is
limited by that of the imaging chip.  A scanner has the leisure to move a
pinpoint sensor or a beam of light across the slide, line by line.  For
example, I've seen professional color scanners for newspaper production that
use a spinning drum like an old fax machine.

Gavin


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