I haven't tried this, but it's an interesting suggestion. I love digital
technique that comes out of the photographer's milieu. Perfect use for those
test slides involving gray card that one uses to establish the true ASA
setting for film and camera.
Joel W.
Jez Cunningham saith:
In the book "Photoshop for Photographers" concerning color balance there is
an interesting suggestion that you photograph a grey card (ideally a Kodak
18 0rey reference) and then use the dropper tool to sample some pixels on
the scanned image. The R, G
and B components should all have the SAME numerical value if there is no
color cast - and presumably should equate to 18%. So by tweaking levels on
the color channels they can be equalized and then by tweaking brightness
and contrast the image can
presumably be 'calibrated' to the gray card.
And then the rest of the photos on the same film should be correct.
Anyone tried this?
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|