PS Search for white field, black field, neutral ash accurate correction of the image color method

After the color of the photo can be color correction through the PS later, of course, there are many ways, I introduced this method is still used to determine the black field, white field, and finally look for the gray method. Black and white fields are easy to find, difficult to find in the accurate gray, because you know: once you can accurately find in the color deviation of the 18% Gray, and then serious photos will be immediately corrected to the correct color. But the accurate search for the method of ash, foreign PS experts have been strictly confidential, domestic also very few people revealed. Now I'm going to show you how to look for a 18-degree grey method that can greatly help you accurately adjust the severity of the color-biased photos. ,

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• PS Palette Tutorial