On 17 Jan 2012, at 18:25, A Sanna wrote:

Is there a calculator or utility out there that could generate the DeltaE between two entered Lab values?

Applescript? Something along the lines of: set {L1, a1, b1} to {47.79, 73.73, -2.93} set {L2, a2, b2} to {48.41, 75.54, -3.88} set dE to (((L2 - L1) ^ 2) + ((a2 - a1) ^ 2) + ((b2 - b1) ^ 2)) ^ 0.5 set dE to (dE * 100 as integer) / 100 --> 2.14 It'd only take a couple of minutes to add an interface in Xcode -- although using a spreadsheet app might be even easier. -- Martin Orpen Idea Digital Imaging Ltd