Adobe 13102498 User Guide - Page 390

383 Chapter 13: Filters You can use filters to apply special effects to images or to perform common image editing tasks, such as sharpening photos. This section provides an overview of Adobe Photoshop CS3 filters and how to apply them to images. Complete information on using some filters is available in other sections. Search Adobe Help or check the index for information on the Sharpening, Blurring, Lens Correction, Lens Blur, Noise Reduction, Liquify, and Vanishing Point filters. Filter basics Using filters You can use filters to clean up or retouch your photos, apply special art effects that give your image the appearance of a sketch or impressionistic painting, or create unique transformations using distortions and lighting effects. The filters provided by Adobe appear in the Filter menu. Some filters provided by third-party developers are available as plug-ins. Once installed, these plug-in filters appear at the bottom of the Filter menu. Smart Filters, applied to Smart Objects, let you use filters nondestructively. Smart Filters are stored as layer effects in the Layers palette and can be readjusted at any time, working from the original image data contained in the Smart Object. For more information on Smart Filter Effects and nondestructive editing, see "Nondestructive editing" on page 308. To use a filter, choose the appropriate submenu command from the Filter menu. These guidelines can help you in choosing filters: • Filters are applied to the active, visible layer or a selection. • For 8-bits-per-channel images, most filters can be applied cumulatively through the Filter Gallery. All filters can be applied individually. • Filters cannot be applied to Bitmap-mode or indexed-color images. • Some filters work only on RGB images. • All filters can be applied to 8-bit images. • The following filters can be applied to 16-bit images: Liquify, Vanishing Point, Average Blur, Blur, Blur More, Box Blur, Gaussian Blur, Lens Blur, Motion Blur, Radial Blur, Surface Blur, Shape Blur, Lens Correction, Add Noise, Despeckle, Dust & Scratches, Median, Reduce Noise, Fibers, Cloud 1, Cloud 2, Lens Flare, Sharpen, Sharpen Edges, Sharpen More, Smart Sharpen, Unsharp Mask, Emboss, Find Edges, Solarize, De-Interlace, NTSC Colors, Custom, High Pass, Maximum, Minimum, and Offset. • The following filters can be applied to 32-bit images: Average Blur, Box Blur, Gaussian Blur, Motion Blur, Radial Blur, Shape Blur, Surface Blur, Add Noise, Cloud 1, Cloud 2, Lens Flare, Smart Sharpen, Unsharp Mask, DeInterlace, NTSC Colors, Emboss, High Pass, Maximum, Minimum, and Offset. • Some filters are processed entirely in RAM. If you don't have enough available RAM to process a filter effect, you may get an error message.