I realized I use Nik’s Silver Efex Pro 2 for virtually all of my monochrome images. Scott and I have developed pages and pages of notes documenting the various techniques for managing luminance separate from color.īut recently I had a breakthrough. Sometimes we also paint (dodge and burn) specific areas in the luminance-only layers.
These luminance layers may then be tweaked for contrast, sharpening, etc. Virtually all of the techniques we’ve learned from Dan, Lee and Mark involve steps such as finding and using one or more of an image’s ten color channels (RGB,Lab,CMYK) as a replacement for the overall luminance control of the image. Likewise, setting a layer’s blend mode to Color will cause its brightness data to be ignore and only its color (hue and saturation) to override what’s below. Setting a layer’s blend mode to Luminosity means only its brightness information will be used to modify layers below. Similarly, if you’re working in RGB color, Photoshop allows you to control luminosity and color separately by using blend modes. There are two principal methods for doing this: In Lab color mode the L (luminance) channel controls brightness and has no effect on color, which is managed in the a and b channels. One fundamental concept to all of our work is the separate processing of luminance (brightness) information and color. Our mentors (actively or passively) are Dan Margulis, Lee Varis and Mark Lindsay. The other day someone asked my, “Why are you using Silver Efex Pro for a color image?” A reasonable question I’ll answer here.įor the past few months, Scott Loftesness and I have been researching and experimenting with a variety of post-processing techniques based on replacing RGB channels and using the Lab color mode. Over on Google Plus ( Facebook, too) I usually list the gear and post-processing apps I use for each image.
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