User Guide

ACDSee Pro 2.5 - User Guide
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Background
color
When you correct distortion in a photo, the edges of the photo may bulge
outwards or shrink inwards. Use the Background color options to fill gaps
in the corners or sides of a corrected photo:
x Image: Select this option if you want to fill gaps in the corners or
sides of a corrected photo by placing the uncorrected photo in the
background. This is useful if the gaps are small.
Show Grid Select this option if you want to display a grid over the photo while you
correct distortion. This is useful if you want to assess whether objects in the
photo are straight.
Adjusting image light levels
Adjusting Levels automatically
You can use the Auto Levels tool to automatically correct the exposure levels of your images.
Auto Levels makes the darkest image pixels darker, and the brightest pixels brighter. You can
save your options as a preset for future use.
To automatically correct an image's Levels:
1. In Edit Mode, on the Edit panel, click Exposure, and then select the Auto Levels tab.
2. Select one of the following options:
x Auto Contrast and Color: adjusts color differences, brightness, and image color
channels.
x Auto Contrast: adjusts the color differences and brightness only.
3. Use the Strength slider to fine tune the amount of exposure you want to apply.
4. Click Exposure Warning to make over- or under-exposed pixels visible. Over-exposed
pixels turn red, under-exposed pixels turn green.
5. Do one of the following:
x Select another tab to use another tool.
x Click Done to apply your changes and close the Auto Exposure tool.
x Click Cancel to discard all changes and close the tool.
Adjusting image Exposure
You can use the Exposure tool to adjust an image's exposure, contrast, and fill light. You can
save your options as a preset for future use.
To adjust an image's Exposure:
1. In Edit Mode, on the Edit panel, click Exposure, and then select the Exposure tab.
2. Drag the Exposure slider to the right to add light to all areas of the image.