From the course: Photoshop CS5 One-on-One: Advanced
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How the Auto commands work - Photoshop Tutorial
From the course: Photoshop CS5 One-on-One: Advanced
How the Auto commands work
In this exercise, we are going to see and compare the effects of each of the three Auto commands. Notice that I have opened Father of our money.psd. I also have opened the Histogram panel and I have Source set to Selected layer, so that we are seeing the histograms for a single layer at a time. Now, we are going to start with the Auto Tone, so I have selected the auto tone layer here inside the Layers panel, that's the top-right fragment of money inside of the composition. What the Auto Tone command does incidentally, is it goes and reads the histogram for each channel and modifies it independently. It goes and stretches the histogram, across the entire width of the graph here, which enhances the contrast and absolutely annihilates the Color Caste as we are about to see. Now, the caste that's associated with this money happens to be indigenous, in other words, it wasn't added by the scanner. However, Photoshop doesn't know that and it goes ahead and gets rid of any color caste it…
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Contents
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Highlights, shadows, and midtones1m 16s
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Introducing the Auto commands7m 23s
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Adjusting Cache Level settings6m 8s
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Reading a channel-by-channel histogram6m 21s
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How the Auto commands work5m 22s
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Auto Tone, Auto Contrast, and Auto Color7m 7s
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Blending the Auto results4m 4s
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Introducing the Levels command6m 15s
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Using Levels as an adjustment layer3m 12s
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Applying custom Levels adjustments6m 8s
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Understanding the gamma value7m 39s
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The futility of Output Levels2m 55s
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Selections and adjustment layers5m 47s
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Opening up the shadows3m 40s
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Previewing clipped pixels4m 51s
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The black, white, and gray eyedroppers5m 7s
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Gray card tips and tricks6m 5s
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Making channel-by-channel adjustments7m 29s
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Introducing the Curves command7m 44s
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Curves dialog box tricks7m 16s
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Curves adjustment layer tricks5m 45s
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Correcting an image with Curves5m 32s
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Filling in the highlights5m 42s
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Neutralizing casts and smoothing transitions5m 37s
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