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Motivation: Demo other color correction features of Adobe PhotoShop 7
The color correction tutorials have emphasized the usefulness of three primary tools in PhotoShop - the Levels, Curves and HSL tools; but as we shall see in this tutorial there are a number of other color correction tools available. |
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The
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The
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First there are a number of Auto color correction commands - these are tools that attempt to use color info from the picture such as the bightness histogram to make automatic corrections to the image. Auto Color, Auto Contrast, Auto Levels, and Equalize are some of the correction commands. In the Flash demo immediately below we examine the effectiveness of these commands while also highlighting two more frequently used color corection tools - Brightness/Contrast and Color Balance.
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Here we see very clearly the iterative nature of color corrections. Fortunately, Photoshop and most other graphic editors allow the user to cancel out of any color correction dialog before permanently effecting the image. Yes, with large 10-30MB image size the the opportunity to do these what-if testing is time limited; but there are other options like working with a smaller quarter sized image, recording all the steps and then repeating the final selected steps as a macro on the larger image.
In our Flash demo we tried several Color Balance settings but used none of them and just Cancel-ed out of that color correction. But the Brightness-Contrast tool proved more acceptable. This was a surprise because many images that are off in exposure are also fairly contrasty. Brightness-Contrast can surely add punch to a picture - but sometimes its is too much. See what happens below:
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