From the course: Photoshop CS5 One-on-One: Advanced
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Understanding the gamma value - Photoshop Tutorial
From the course: Photoshop CS5 One-on-One: Advanced
Understanding the gamma value
I've saved my progress as Composite B&W points.psd, so called because we've modified the black and white points for the composite image. It's found inside the 14_levels_curves folder. In this exercise, we're going to take a look at the Gamma Value, which allows us to adjust the Midtones in the image, while keeping the black and white points fixed. It's an essential option inside this dialog box and very useful as well. Now, I should tell you that I've reset a couple of preferences here. First of all, I went ahead and reestablished a Cache Levels value of 4, so that you and I are on the same page, assuming that you never changed your Cache Levels. And then I've also reset my workspace to One-On-One, in order to tidy up my screen a little bit. I actually did that, to be honest, a couple of exercises ago. Now, notice over here, as a result of the new Cache Level's value, over here on the left side of the Adjustments panel, you'll see this warning, which is telling you that your Histogram…
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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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