Hi Jeff, Those are white balance multipliers, as the cameras write them. These multipliers equalize colour channel sensitivities with the aim that after multiplication raw values become equal on the gray. The idea of expressing white balance as CCT + tint is a film paradigm, and it is not the best for digital (not directly measured data, difficult to calibrate, too many conversions back and forth). On 12/5/22 01:22, Jeff Nova via colorsync-users wrote:
I’ve run into some data where the white balance is expressed in a manner befuddling to me:
1.46399. 1 1.52999
Is 6500K ?! There is a tint (4.2 for what that’s worth) applied to the white balance as well, which may confound this data.
Anyone have an idea of what these numbers might be? XYZ and xyY both seem wrong…?
Thanks! Jeff _______________________________________________ Do not post admin requests to the list. They will be ignored. colorsync-users mailing list (colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/iliah.i.borg%40gmail...
This email sent to iliah.i.borg@gmail.com
-- Best regards, Iliah Borg LibRaw, LLC www.libraw.org www.rawdigger.com www.fastrawviewer.com