Using the Lab Color Mode to Enhance a Photos Colors
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In this mode, you can easily enhance the lightness and colors in a photograph using the curves adjustment layer. For example, here is a photo of a very intense storm over the central mountains in Oregon; the brilliant color sky was amazing, never seen any thing like it.
Because the sky was so bright, the rest of the scene was under exposed.
I placed this RGB photo in Photoshop CS6 and immediately changed its mode to the Lab color space. Next I placed a curves adjustment layer over the base layer. I used the "L" channel (the lightness channel) to brighten the under exposure area. Then I used the "a" channel (the magenta to green channel) to intensify the sky and the reflection in the water, and the greenery in the photo. Then used the "b" channel (the yellow to blue channel) to further modify the sky and scenery. Here is the results using only the curves adjustment layer:
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Enjoy photography with my Nikon D500 camera and have fun with Photoshop CS6
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