At 12:52 AM +0000 11/26/01, Jawed Ashraf wrote:
>> o By the way, a cool trick for comparing a scan displayed on the
>> screen to the original slide is to open an empty window with a white
>> background and hold the slide up to it, using the monitor as a light
>> table that is perfectly matched in color temperature, spectral
> > distribution and intensity to...your monitor.
>It occurred to me this week that this is not the right thing to do (I was
>looking at some slide-scanning samples I've published on the web and
>thinking about their colour). Because slides are designed to be viewed
>using lighting of 5000-5500K (as far as I can tell).
BF: This trick should work at all color temperatures because your
eyes adapt. The key is that to compare a slide (or print) to a
monitor the viewing illumination must have the same color temperature
and intensity as the screen. For slides you can use the screen
itself as an illuminator.
>Anyhow, if you have a Mac, your system is probably calibrated around 5000K,
>as far as I understand it. So the "slide against the screen" trick should
>be more truthful.
BF: At the time I wrote that my monitor was calibrated with
ColorVision's Monitor Spyder and PhotoCal to 6500K at gamma 2.2.
Bill Fernandez * User Interface Architect * Bill Fernandez Design
(505) 346-3080 * email@example.com * http://billfernandez.com