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Based on the device-independent CIE specification from 1976, Lab color is frequently misrepresented as a techy, labor-intensive color space. In fact, Lab color performs certain types of color modifications more quickly and with better results than RGB. In Photoshop CS3 Mastering Lab Color, Deke McClelland explores how to use Lab color "to make bad photographs great and great photographs even better." He demonstrates image manipulations that are best suited to Lab, and walks through a typical, non-destructive Lab correction. Deke also shows how to correct lighting, apply selective color modifications, and reverse the effects of color cast. Exercise files accompany the course.
The last thing I want to show you is less corrective and more selective. We have all seen catalogues online or in print that show a model in an outfit. And even though it's just one shot, the outfit changes colors. To show that it's available in, I don't know, gosling green or flowering rye or dying monkey. All real colors by the way. And you have probably seen how you can change the color of just a single part of an image, just the reds the yellows for example, using the Hue/Saturation command.
Only thing is there is a much better way in Lab. Nothing against Hue/Saturation. When it works, it works, but when it doesn't work, the following exercises show you what to do. We'll start by changing color of the car, without any masking whatsoever. Then we'll see how to change the color of a blue shirt and tie set against a blue background, using a mask created by Cross Pollinating Lab and RGB. And we are going to achieve such control, the results are going to look so good, you will be tickled pink. Carnation pink, pink Cadillac pink, dying monkey pink.
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