Archives for January 2016

This is the 22nd in a series of posts on color reproduction. The series starts here. Some profiles and the default settings of some raw converters have nonlinearities built into them. A case in point is Lightroom process version 2012 and the Adobe Standard profile, which together apply nonlinearities separately to the RGB planes, resulting… [Read More]

This is the 21st in a series of posts on color reproduction. The series starts here. I’ve spent most the last week writing Matlab code to automate the Macbeth chart measurements that I came up with earlier, and also adding some new ones. My goal here is to provide numeric and visual measures of how… [Read More]

This is the 20th in a series of posts on color reproduction. The series starts here. X-rite publishes ColorChecker reference color values by illuminating their targets with D50 light, not by publishing the spectral responses for each patch. If you want to convert the X-Rite values to a color space with a white point that’s… [Read More]

A few color images I’ve developed over the last couple of days. Most of them were exposed at dawn. No composites here.