Xrite Color Profiles ?

Started 11 months ago | Discussions thread
Iliah Borg Forum Pro • Posts: 28,884
Re: Xrite Color Profiles ?
3

dddduuuu wrote:

Iliah Borg wrote:

dddduuuu wrote:

Brightness 50, Blacks 5, Contrast 50 and Curve Medium Cobtrast makes ACR pipeline true linear.

You got it exactly wrong.

Here is our artice that explains the issue https://www.rawdigger.com/howtouse/overriding-raw-converter-default-adjustments-settings

you've missed the main point.

Try your setting instead without modifying the dcp to make the embedded curve (0,0) (1,1) and prove the resulting numbers for G with gamma 1 form a linear progression, increasing 2x per stop.

If DCP-profile doesn't have ProfileToneCurve tag, ACR applies the default one

"

To embed a linear curve into an existing profile, I use a very fast, reliable, and simple method:

> exiftool -ProfileToneCurve="0 0 1 1" -o new.dcp old.dcp

"

Are you suggesting that a user does the above (as in my comment to the article)? If so, IMHO you should have explained it explicitly, starting with what is "linear profile" in your "Just reset, then select linear profile and PV2. "Zero" of some adjustments is set with non-zero value. Brightness 50, Blacks 5, Contrast 50 and Curve Medium Cobtrast makes ACR pipeline true linear" and how to make one.

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