Operation Manual

588 | CorelDRAW X8 User Guide
• Exposure slider — lets you compensate for the lighting conditions at the time the photo was taken. Exposure is the amount of light
allowed to fall on the image sensor of a digital camera. High exposure values result in areas that are completely white (no detail); low
values result in increased shadows. Exposure values (EV) range from -3.0 to + 3.0.
• Brightness slider — lets you brighten or darken an entire image. If you want to darken only the darkest areas of an image, you must use
the Shadow slider.
• Shadow slider — lets you adjust the brightness in the darkest areas of an image without affecting the lighter areas. For example, a
bright light behind a photo subject (backlighting) at the time a photo is taken can cause the subject to appear in shadow. You can
correct the photo by moving the Shadow slider to the right to lighten dark areas and reveal more detail.
Using the histogram
While you are making adjustments, you can view the tonal range of the image on the histogram to check for any clipping of shadow or
highlight areas. Clipping is the shifting of image pixels to white (highlight clipping) or black (shadow clipping). Clipped highlight areas
appear completely white and contain no detail; clipped shadow areas appear completely black and contain no detail.
The button on the left side of the histogram displays a warning if the image contains shadow clipping. The button on the right side of the
histogram displays a warning if the image contains highlight clipping. You can also choose to apply shading to the clipped areas in the
preview window.
To adjust the color and tone of a RAW camera file
1
Click File Import.
2 Select the RAW camera file or files that you want to import, and click Import.
3 From the Color depth list box, choose one of the following options:
• 48-bit (16 bits/channel)
• 24-bit (8 bits/channel)
4 To remove a color cast, select the Auto option from the White balance list box.
If you are not satisfied with the results, you can set the white point more precisely by using the Eyedropper tool to sample a white
or gray color in your image.
5 Perform one or more tasks from the following table.
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To Do the following
Simulate different lighting conditions Select an option from the White balance list box.
Correct color in the image Adjust the Temperature slider, and then fine-tune the color
correction by adjusting the Tint slider.
Make colors more vivid or less vivid Move the Saturation slider to the right to increase the amount of
color in the image or to the left to decrease the amount of color in
the image.
Adjust exposure Move the Exposure slider to the left to compensate for high-
exposure camera settings or to the right to compensate for low-
exposure camera settings.
Brighten or darken an image Move the Brightness slider to the right to lighten the image or to
the left to darken the image.