Do no now what to say ride now. Carry on!

On 12 Jan 2024, at 21:00, colorsync-users-request@lists.apple.com wrote:

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Today's Topics:

1. Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3 (Scott Martin)

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Message: 1 Date: Fri, 12 Jan 2024 12:32:49 -0600 From: Scott Martin <scott@on-sight.com> To: "colorsync-users@lists.apple.com" <colorsync-users@lists.apple.com> Subject: Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3 Message-ID: <00A2AC12-28DD-4F56-865A-373BB240FB76@on-sight.com> Content-Type: text/plain; charset=utf-8

Andrew has it right - PS?s Lab values are on a scale of -128 to +128 while Lightroom supports ?over-range? values that go beyond this limitation (I?m not sure how much further).

Here?s an example with a real photograph made yesterday:

www.on-sight.com/images/Overrange_Lab_value_support.jpg

Lightroom has over-range support and Photoshop does not. This product is 35 years old and still doesn?t have professional level color specification and identification support. Sad.

Also, MacOS saves screen grabs in the display color space - that's what you're seeing Steve J. He doesn?t normally work in display color spaces. There are ways of changing this system default - I changed mine so that screen grabs are saved in sRGB for reduced file size.

Also who is Steve J at Apple ColorSync!? You?re freaking me out a little, lol. Ghost anyone?

Scott Martin www.on-sight.com Imaging Science for Art

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On Jan 12, 2024, at 12:03?PM, Andrew Rodney via colorsync-users <colorsync-users@lists.apple.com> wrote:

This is the problem:

http://digitaldog.net/files/LabMismatch.png

Andrew Rodney http://www.digitaldog.net/

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On Jan 12, 2024, at 8:53?AM, Remington, David <david_remington@harvard.edu> wrote:

Looks the same to me.

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