Munsell Digitized Color Target (free)

[ronzie]

http://www.wallkillcolor.com/

has some interesting free display targets and conversion tables (in spreadsheet formats) that might be used to compare/set your camera settings or scanner calibration for those that use the Xrite-Munsell Gretag-Macbeth Color Checker Charts (illustrated here http://www.munsellstore.com/%28S%28jqql ... eSupport=1 ) for shooting a calibration target chart to get faithful reproduction.

I included a frame when I shot film putting the chart near the subject matter in the same light for the print labs use. In the digital darkroom I can run the picker or eye dropper over the chart adjusting the image as necessary to obtain the closest RGB values as shown in the referenced tables for faithful color reproduction.

I use the .jpg target to get a quick eyeball reference check for my calibrated monitor. For an initial color balance adjustment I'll place the downloaded .jpg target in one window and the one I made for a scene test shot in the other and make color adjustments to get it in the ball park and then use the eye dropper readings to get an exact match if desired.


X-Rite and some photography supply stores sell the charts as well. I keep mine well protected and it has lasted within perceptual color standards for several years.

To shoot a chart just to check your camera settings as I recall you place the chart in daylight north facing clear sky at noon June 12. That's as close as you'll get without investing in calibrated standard lighting.