[thelist] What Hex Do *You* Get?

Ben Henick persist1 at io.com
Sat Jan 4 17:13:00 CST 2003

On Sat, 4 Jan 2003, Gina Anderson wrote:

> After reading some of the results, I started messing with my display in just
> the brightness setting. I turned my brightness setting to 100%, and then
> down to like "0" (which didn't make my screen black, just way darker) and
> even added a low low contrast---I was only off 1 point or two through the
> RGB values--even when the colors looked so different. That doesn't make much
> sense to me--why would a "screen color picker" pick up almost the same
> values when adjusting the display so much?

Pointing back to the same 16/32 bit v. 24 bit issue...

If I create a swatch of color in Photoshop (say, by selecting and filling)
at one color depth, take a screen cap, switch video settings, and re-check
the value, the copied value may well change.

To make things even more interesting, an image with a bgcolor of {x}
created in video settings other than 24 bit may well show up with slight
contrast on a page with a bgcolor also of {x}.  Given that an uncalibrated
Photoshop install is biased toward color representation best suited for
print development, I am not surprised.

>From here, I get the hunch that a long discussion of Photoshop's video
hardware interface and calibration plugins could ensue - if any of us knew
the first thing about what's under the hood.  Any takers?  (Not me.)

Seriously, a lot of this points back to color-depth issues.  I swear it, I

If I discover anyone who runs in anything other than 24 bit, I won't think
twice about bending their ear about how on the Web, color is a 24 bit
animal and they really ought to default their hardware settings to 24
bit.   (The only reason I know of for defaulting to other settings has to
do with games, and most games will change hardware settings

Ben Henick                     "In the long run, men hit only what they aim
Web Author At-Large             at.  Therefore, though they should fail
http://www.io.com/persist1/     immediately, they had better aim high."
persist1 at io.com                 -- Henry David Thoreau

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