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Review answers

1The term resolution refers to the number of pixels that describe an image and establish its detail. The three different types of resolution include image resolution, measured in pixels per inch (ppi); monitor resolution, measured in dots per inch (dpi); and printer or output resolution, measured in ink dots per inch.
2You can use the crop tool to trim, scale, and straighten an image.
3You can use the black, white, and gray triangles below the Levels command histogram to control the midpoint and where the darkest and lightest points in the image begin, thus extending its tonal range.
4Saturation is the strength or purity of color in an image. You can increase the saturation in a specific area of an image with the sponge tool.
5The Unsharp Mask filter adjusts the contrast of the edge detail and creates the illusion of a more focused image.


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