User Guide

ACDSee 12 User Guide
7. Do one of the following:
Click Done to apply your changes and close the Resize tool.
Click Cancel to discard all changes and close the tool.
Resizing tips:
Maintain image quality by reducing images only by 33%, 50%, or 66%. Other percentages can distort the aspect ratio.
Avoid resizing an image repeatedly. Each resizing places image pixels using a slightly different orientation. As a result, mul-
tiple resizes can change the overall color and appearance of the image. If your first resize attempt does not produce the
desired result, click the Undo button.
Avoid increasing the size of an image. Increasing image size makes the image's pixels more apparent, causing a grainy
effect.
Exposure/Lighting tools
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 the brightness curves in an image:
1. In Edit mode, in the Exposure/Lighting group, click Exposure.
2. Set the options as described below.
3. Do one of the following:
Click Apply to apply your changes and set options on another tab.
Click Done to apply your changes and close the Curves tool.
Click Cancel to discard all changes and close the tool.
Click Reset to clear your changes and reset to default settings. If you saved your changes, you cannot reset your settings.
Curves options
Exposure Drag the slider to the right to increase the exposure, or drag to the left to decrease exposure.
Auto Click the Auto button to automatically adjust the exposure level.
Contrast Drag the slider to the right to increase contrast, or drag to the left to decrease contrast.
Fill Light Drag slider to the right to increase the amount of light in the darkest areas of the image, or drag to
the left to decrease fill light. Fill light brightens dark areas of the image.
Exposure warning Highlights overexposed and underexposed areas of the image. Overexposed pixels turn red,
underexposed pixels turn green. The icon is gray when disabled, and turns yellow if enabled.
Adjusting image levels
You can use the Levels tool to precisely adjust the contrast and light levels in your images. You can save your options as a preset for
future use.
To adjust image levels:
1. In Edit mode, in the Exposure/Lighting group, click Levels.
2. Do one of the following:
Set the options as described below to adjust the contrast and light levels manually.
Click Auto and select a menu option to automatically adjust image properties.
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