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Chapter 5. Line Art Scanning > Improving Definition

Improving Definition

When you convert an image to bitmap mode (which we'll do at the end of this chapter), any areas that are darker than 50% gray will become pure black. This usually causes detail in the darkest, most densely packed areas to clog up and become a black blob. You can prevent this from happening by sharpening the image. Sharpening will add more contrast to those densely packed areas and produce better detail. However, before you sharpen an image, you'll want to take a snapshot of the unsharpened image so you can use it later to enhance the result.

Taking a Snapshot

Choose New Snapshot from the side menu of the History palette to record what the image looks like before you sharpen it. Name the snapshot something like “Before Sharpening” so you can remember what it contains. The snapshot you create will appear near the top of the History palette (Figure 5.8). Click the column just to the left of the snapshot thumbnail icon to tell Photoshop to use this version of the image when using the History brush.


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