[APML] adjusting color balance [was:To Robert Reeves...and all]

[Matt BenDaniel <matt@starmatt.com>]

Nicola,

1. You need to scan the film in a way that does not clip. You also want to scan at 12- or 16- bits per channel if you can.

2. Your monitor should be well adjusted for contrast and color temperature. If you intend to print, you'll need to adjust your printing parameters to yield consistently with what you see on the monitor. You need to decide what working color space to use in Photoshop (e.g. sRGB).

3. Color adjustment in Photoshop is primarily done with curves. Ultimately, color balancing cannot be accomplished according to objective formulae. Your eye is the final subjective judge of what the image should look like, and your hand is what adjusts the curves. You need to have/develop the ability to control color through curves. The most important quantitative tool is the histogram.

For more information on the above see:
http://world.std.com/~mattb/articles/curves.htm

At 10:13 AM 6/25/2002, Nicola Montecchiari wrote:
>Hi Robert and All,
>
>in your website at film test section you give a rough idea of the colour shift of some films. Would it be possible to quantify this shift in RGB format so that I know how much I should correct with Photoshop when I use a film or another?
>
>thanks
>Nicola

--
Matt BenDaniel
matt@starmatt.com
http://starmatt.com


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