Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3
Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3
- Subject: Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3
- From: Scott Martin via colorsync-users <email@hidden>
- Date: Fri, 12 Jan 2024 12:32:49 -0600
- Arc-authentication-results: i=1; rspamd-88587c4b9-x2gqs; auth=pass smtp.auth=dreamhost smtp.mailfrom=email@hidden
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=mailchannels.net; s=arc-2022; t=1705084381; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references:dkim-signature; bh=ZI89iGLIys/K5UbmMmVjCanVGVi2vAZoVZHuUl/clfk=; b=zJuneLrB+lYE3Cjr8iOd6MAUBZ+owqQvBPMuSpVOnbZVDoxYyg9BBLU8377YA9lWTKB8j7 pUM2E4TnRatRv8Y3eq8LCE6s61W8bRy/QY+vam/QgDLrY1P/5SLiu8XosRrgxdDCamlhtB ZRDXjaRVZHz4LN6ZUhaEv+iFSHyuDPR108KMr0ArummNXgzba24qWuKmyZAVo9xcZ+uCvV +7NtMzQuCBmu8MKIV3JymC722e+wMg9TL95waG5b+ywfi1J71YittgO5tsx1yYupLy7j0j HyJzIiYgHbJl5dJBNtvvyVByBfB0w7EjLZr0DdxQI84p0eeNqLXJv79mHE2nUw==
- Arc-seal: i=1; s=arc-2022; d=mailchannels.net; t=1705084381; a=rsa-sha256; cv=none; b=mECVMOLNsXzi3XvkcaJwZIj9TUzEZLwidAdcU82em3D8y4HiTgCTnGii9bExl8eDEtrTN9 RbSlQsOrD8R/k0HIBhrM2Tv1vrYKxBJWmJ2tiJNq6HvBCCkmWBgNBXN+2hXlBWonMIx+Bb IRh/nCsImiZ+sJyhH9c9TtfrsGMtupn79PgBvrOnDepgwoyCnVPK0tazuLaUlfHZ8XHTmN 5cAJoqv59D5GviW0YZhzgMJc013gYPnGqyW3Q45wWwMu3ZkAKF/asRvTEcHfm44GaipINg 9t3/SV6gDiK5RlCwiRX5N+lZc58bdokgKXottfKQ6nTx3/FPOqUeykOlhyoKtQ==
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
> On Jan 12, 2024, at 12:03 PM, Andrew Rodney via colorsync-users
> <email@hidden> wrote:
>
> This is the problem:
>
> http://digitaldog.net/files/LabMismatch.png
>
> Andrew Rodney
> http://www.digitaldog.net/
>
>> On Jan 12, 2024, at 8:53 AM, Remington, David <email@hidden>
>> wrote:
>>
>> Looks the same to me.
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> colorsync-users mailing list (email@hidden)
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
| References: | |
| | >Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3 (From: "Remington, David via colorsync-users" <email@hidden>) |
| | >Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3 (From: Andrew Rodney via colorsync-users <email@hidden>) |
| | >Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3 (From: "Remington, David via colorsync-users" <email@hidden>) |
| | >Re: Lab decimal PS Re: colorsync-users Digest, Vol 21, Issue 3 (From: Andrew Rodney via colorsync-users <email@hidden>) |