Originally Posted by
Mike Buckley
The colors or lack of them will be evident when you display the histogram. If there is no "color," the entire histogram data will be white. Otherwise, the pertinent color channel(s) will be displayed. That's true whether you use the "Black and White Conversion" edit step to convert or the "Saturation/Warmth" edit step to desaturate.
Hopefully you use the conversion process rather than the desaturation process in all but very few circumstances. The desaturation process results in a file that has one-third the data.