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Photoshop CC One-on-One is back, and this installment teaches you how to build on your basic knowledge and achieve next-level effects with this premiere image-editing program. Industry pro Deke McClelland shows you how to seamlessly move and patch areas of a photo with the Content-Aware toolset; stretch the brightness of a scene with automatic and custom Levels adjustments; create intricate designs with text and shapes; and morph an image with layer effects and transformations. Deke also shares his techniques for sharpening details, whether addressing noise and highlight/shadow clipping or camera shake, and converting a full-color image to black and white. The final chapters show you how to best print and save images for the web, making sure all your hard work pays off in the final output.
In this movie, I'll show you how you can change the color balance of an image by applying levels on a channel by channel basis. So many of you will recognize this badly balanced version of my children here from chapter eight. I'm going to drop down to the black white icon, click on it, and choose the levels command. And notice that in addition to correcting the composite image, meaning all channels at the same time You can correct each one of the channels independently, and we have keyboard shortcuts to switch between them as well. Of Alt-2 through 5 here on the PC, that's option+2 through 5 on the Mac.
And so for example, if I thought there was too much red in this image, I could switch to the red channel, and I could go ahead and drag that gamma triangle to the right. Then if I feel like I've got too much green then I could switch to the green channel and drag it's grey triangle as well. Thing is that's kind of a pain in the neck to have to switch between channels and just make guesses about what it is you're supposed to do. Which is why Photoshop includes these little eyedroppers here. For example, if you sleect the black triangle and click on a dark detail, it'll clip that detail to black on a channel by channel basis.
So you're making channel by channel modifications. So you can see here in the green channel, the black point value switched 20. Whereas in the blue channel, it switched to 17. You can do the opposite with the white eye dropper. For example I can click here on the pillow, if I wanted to clip the heck out of my colors, and you can see that the white point value is now 174, in the blue channel, whereas say in the red channel, it's 220. I'm not very fond of those two tools, I have to admit. I never use them. Except for illustration work, so they're not really very useful for correcting photographs.
However, this gray eyedropper, we'll go ahead and change to gamma value on a channel by channel basis. For example, if I think the walls should be neutral. I could click on it, and now we can see the gamma value in the red channel is 0.72, whereas in the green channel, it's 0.98. And where that grey eyedropper becomes helpful is if you have something on the order of a grey card in the photograph. So if I had included a grey card along with this photo, I can just click on it, and that will go ahead and neutralize the grey and correct the color cast.
The thing is, of course, this photograph does not include a grey card, but I can show you how to fake one in the very next movie.
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