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how do i darken the selected pixels? (eg move them closer to black).

I have some thin grey lines in a picture but they are not visible when i print out the image. I can select them using the magic wand but i dont know how to make them darker..


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up vote 2 down vote accepted

There are lots of ways to do this. One option is to adjust the Brightness/Contrast or Hue/Saturation (look under "Adjustments".) Another is to zoom in so you are close enough to click accurately on the one-pixel-wide line and use the paint bucket tool with a darker color.

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