Adobe Photoshop CS2 On Demand [Electronic resources] نسخه متنی

Using the Add Noise Filter

When wanting to retouch an image, you can apply the Add Noise filter. The Add Noise filter applies random pixels to an image, simulating a grainy effect. For example, you would use the Add Noise filter to make an image look like it was taken using high-speed film. In addition, the Add Noise filter can be used to reduce banding in feathered selections or graduated fills or even give a more realistic look to heavily retouched areas. Experiment with the Add Noise filter in combination with other filters, such as Motion Blur filters, to create eye-catching special effects.

Use the Add Noise Filter

Select the

Layers palette.

Select the layer in which you want to apply the Add Noise filter.

Click the

Filter menu, point to

Noise , and then click

Add Noise .

Select from the following options:

• 
  

  Amount.
  Drag the slider, or enter a value (0.10 to 400) to increase or decrease the amount of noise added to the image.

• 
  

  Distribution.
  Click the Uniform option to created a more ordered appearance, or click the Gaussian option to create a more random noise pattern.

• 
  

  Monochromatic.
  Select this check box to apply the filter to the tonal elements in the image without changing the colors.

TIMESAVER

The plus and minus signs, located directly under the image preview, let you increase or decrease the viewable area of the image.

Click

OK .