Lighten highlights: Enter a positive number less than 255 in the right Input Levels box, or drag the white slider under the histogram. Canvas assigns the maximum output level to all pixels on the right of the slider. Lighten shadows: Enter a positive number in the left Output Levels box, or drag the black slider under Output Levels to increase the minimum output level. This value becomes the darkest value allowed in the image. Darken highlights: Enter a positive number less than 255 in the right Output Levels box, or drag the white slider under Out- put Levels to set the maximum output value. This is the bright- est value allowed in the image. You can darken highlights in one color channel to bring brighter colors back into the printable color range. Darken shadows: Enter a number greater than zero in the left Input Levels box, or drag the black slider under the histogram. Canvas assigns the minimum output level to all pixels on the left of the slider. Adjust midtones: Enter a value in the center Input Levels box or drag the gray slider under the histogram. To lighten mid- tones, enter a value from 1.01 to 9.99 or drag the slider to the left. All pixels on the right of the slider will be brighter than medium gray. To darken midtones, enter a value from 0.1 to 1.00 or drag the slider to the right. All pixels on the left of the slider will be darker than medium gray. 5 Click OK. Saving and loading Levels settings You can save Levels settings on disk to use again. For example, after correcting a scanned photo, you can save the settings and use them to correct other images scanned from the same source. To save Levels settings:  In the Levels dialog box, click Save. Type a name for the settings file, select a location, and click Save. To load previously-saved Levels:  In the Levels dialog box, click Load. A directory dialog box opens. Locate the settings file you want to open, and click Open.
Canvas 8 Help: Image adjustment and correction (8 of 24)                                            Page #690