Reply to thread

Message

<blockquote data-quote="WayneF" data-source="post: 458492" data-attributes="member: 12496">Not to knock Lab color in any way, it is quite neat, but it's just another way to look at color...&nbsp; And as to dreams of wider gamut, it has be converted back to RGB (or CYMK) to view or print it or use it.But it seems useful to point out that (if we only have Lightroom, but not Photoshop), we can also work with White Balance, which is in fact, just Lab color.The White Balance Temperature slider (yellow to blue) is just the Lab b axis.&nbsp; And White Balance Tint slider (green to magenta) is just the Lab a axis.&nbsp; LAB defines the a, b, L axes. And both a and b axes are color independent of the L intensity axis.RGB color is device dependent on intensity... the device that creates it, and the device that views it, neither are perfect.&nbsp; LAB&nbsp; is device independent (but we still have to view it).The LAB L axis is intensity, and a and b are color, independent of intensity. Color does not exist as Lab, but Lab is a way to separate color from intensity. Shifting RGB colors necessarily shift brightness level, but shifting LAB does not.&nbsp; But it will have to go back to RGB ultimately.Anyway, my point, it seems simpler and more useful to just learn White Balance.&nbsp; It has already been handled for us.</blockquote>

[QUOTE="WayneF, post: 458492, member: 12496"] Not to knock Lab color in any way, it is quite neat, but it's just another way to look at color... And as to dreams of wider gamut, it has be converted back to RGB (or CYMK) to view or print it or use it. But it seems useful to point out that (if we only have Lightroom, but not Photoshop), we can also work with White Balance, which is in fact, just Lab color. The White Balance Temperature slider (yellow to blue) is just the Lab b axis. And White Balance Tint slider (green to magenta) is just the Lab a axis. LAB defines the a, b, L axes. And both a and b axes are color independent of the L intensity axis. RGB color is device dependent on intensity... the device that creates it, and the device that views it, neither are perfect. LAB is device independent (but we still have to view it). The LAB L axis is intensity, and a and b are color, independent of intensity. Color does not exist as Lab, but Lab is a way to separate color from intensity. Shifting RGB colors necessarily shift brightness level, but shifting LAB does not. But it will have to go back to RGB ultimately. Anyway, my point, it seems simpler and more useful to just learn White Balance. It has already been handled for us. [/QUOTE]

Verification