Alternate Level Up in Photoshop

When it comes to very basic color correction in Photoshop, the simplest is setting the dark point and light point using the levels command. Photoshop has a helpful feature that gives you more visual feedback when running the adjustment. While clicking on the dark or light point sliders, hold down the Alt key. The image will turn solid white or black and the nearest tonal values will appear as dots on the screen. As a rule of thumb, the proper adjustment is when the first pixels begin to appear.

This method will also work when adjusting color values. Select each color channel individually when running the adjustment. This will adjust not only the contrast, but correct colors as well. The Alt key shortcut will work in each color channel just like it does on the combined channels.


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