Lab mode colour processing

[ISO]

Thanks Manabendra :)

[Thad E Ginathom]

In Rawtherapee the LAB controls give some amazing possibilities. My favourite is adjusting level according to hue. Changing the brightness of particular colours.

Flower pic with over-bright green leaves? Very easy to change :)

(I do very little processing from raw. Usually tweak camera jpegs using GIMP)

Thanks for commenting. My goal here was increasing color saturation using A and B channel without affecting luminance that is power of LAB mode. Unfortunately it is 8bit mode (don't know if there are any recent change) but using some PS tricks only required information can be blend to original image.

Here's the LAB control panel in Rawtherapy:



There's quite a lot to play with!

[ISO]

Thanks that's nice because RAW preserves original image.

LAB mode in PS is simple. Increasing contrast of A abd B channel boost colour saturation. Plating with S curve gives lot of flexibility.

Another important benefit is sharpening. Sharpening Luminocity channel sharpens overall image with minimum degradation.

[Nishit Dave]

In Rawtherapee the LAB controls give some amazing possibilities. My favourite is adjusting level according to hue. Changing the brightness of particular colours.

Flower pic with over-bright green leaves? Very easy to change :)

(I do very little processing from raw. Usually tweak camera jpegs using GIMP)

Capture One Express (nothing beats free) also allows saturation and brightness adjustments with preset colours or a dropper tool. I haven't used Rawtherapee sufficiently to know how different it might be.

[krishnanv]

I have this book with me by Dan Margulis

https://www.amazon.com/Photoshop-LAB-Color-Adventures-Colorspace/dp/0321356780

Comprehensive and great understanding of how to work with LAB.


I think there is a pdf on the web somewhere but I prefer the print.

Great book