Adobe Photoshop CS4 - Manual (Page 195)

188 USING PHOTOSHOP CS4
Color and tonal adjustments
Last updated 1/10/2010
Making quick image adjustments
Change the color balance using the Photo Filter command
The Photo Filter adjustment mimics the technique of placing a colored filter in front of the camera lens to adjust the
color balance and color temperature of the light transmitted through the lens and exposing the film. Photo Filter also
lets you choose a color preset to apply a hue adjustment to an image. If you want to apply a custom color adjustment,
the Photo Filter adjustment lets you specify a color using the Adobe Color Picker.
1 Do one of the following:
• Click the Photo Filter icon in the Adjustments panel.
• Choose Layer > New Adjustment Layer > Photo Filter. Click OK in the New Layer dialog box.
Note: You can also choose Image > Adjustments > Photo Filter. But keep in mind that this method makes direct
adjustments to the image layer and discards image information.
2 In the Adjustments panel, choose the filter color, either a custom filter or a preset. For a custom filter, select the
Color option, click the color square, and use the Adobe Color Picker to specify a color for a custom color filter. For
a preset filter, select the Filter option and choose one of the following presets from the Filter menu:
Warming Filter (85 and LBA) and Cooling Filter (80 and LBB) Color conversion filters that tune the white balance in an
image. If an image was photographed with a lower color temperature of light (yellowish), the Cooling Filter (80) makes
the image colors bluer to compensate for the lower color temperature of the ambient light. Conversely, if the photo
was taken with a higher color temperature of light (bluish), the Warming Filter (85) makes the image colors warmer
to compensate for the higher color temperature of the ambient light.
Warming Filter (81) and Cooling Filter (82) Use light-balancing filters for minor adjustments in the color quality of an
image. The Warming Filter (81) makes the image warmer (more yellow), and the Cooling Filter (82) makes the image
cooler (bluer).
Individual Colors Apply a hue adjustment to the image depending on the color preset you choose. Your choice of color
depends on how you’re using the Photo Filter adjustment. If your photo has a color cast, you can choose a
complementary color to neutralize the color cast. You can also apply colors for special color effects or enhancements.
For example, the Underwater color simulates the greenish blue color cast in underwater photos.
Make sure that Preview is selected to view the results of using a color filter. If you don’t want the image darkened by
adding the color filter, be sure that the Preserve Luminosity option is selected.
3 To adjust the amount of color applied to the image, use the Density slider or enter a percentage in the Density box.
A higher density results in a stronger color adjustment.
Apply the Color Balance adjustment
The Color Balance command changes the overall mixture of colors in an image for generalized color correction.
1 Make sure that the composite channel is selected in the Channels panel. This command is available only when
you’re viewing the composite channel.
2 Do one of the following:
• Click the Color Balance icon in the Adjustments panel.
• Choose Layer > New Adjustment Layer > Color Balance. Click OK in the New Layer dialog box.
Note: You can also choose Image > Adjustments > Color Balance. But keep in mind that this method makes direct
adjustments to the image layer and discards image information.