One of the most common tasks in PhotoShop includes improving the quality of images. Most improvements can be made with just a few commands that are outlined below. Steps to Making Improvements
The basic steps towards better image quality (ACTORS):
1. Adjust contrast and brightness by adjusting Levels.
2. Correct color with the Variations command.
3. Trim the image using Crop, Image Size and Canvas Size.
4. Orient using Rotate.
5. Repair the image using painting tools and Rubber Stamp.
6. Sharpen the image with Unsharp Mask.

Improving images is definitely more art than science. The steps above will help you get the most out of your images, but they aren’t always applied in that order and some steps are sometimes skipped entirely. There is only one absolute rule: Garbage In, Garbage Out. PhotoShop can sometimes work miracles, but if you start with a very poor image, you’ll have a hard time making something good come of it. If you don’t see any significant improvement after step 2, you are probably starting with an extremely poor image. Scan it again, or find a better one.

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