Photoshop CS3 for Screen Printers- P14

Photoshop CS3 for Screen Printers- P14: The toolbox is the heart of Photoshop CS3, and where you’ll find thetools you need to create your artwork and perform editing tasks. Fromthe toolbox you can access the selection tools, shape tools, type tools,Crop tool, and eraser tools. These are basic tools that any screen printeror graphic artist needs.
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Photoshop CS3 for Screen Printers- P14366 Part IV / More Tools Figure 20-3: Using the Twirl distort filter. Note: As with the other filters, the dialog box is pretty intuitive. Click inside the window to adjust the amount of distortion for this one, and use the – and + buttons for zooming. Noise Noise adds or removes noise, or static, in a picture. Noise consists of random pixels, and adding noise is useful when you need to apply random pixels for a special effect. I can’t think of any reason why you’d want to add noise to an image, unless you’ve got a picture of a TV set and want to make it look like it’s broken, but I’m sure there’s a reason out there somewhere! On the flip side, reducing noise is generally helpful, and the Despeckle and Dust & Scratches options can be used to reduce noise in an image quite successfully. Be careful if you plan to screen print the image though; the options in the Dust & Scratches dialog box can signifi- cantly blur the image and might not be useful. Chapter 20 / Special Effects 367PixelatePixelated images are generally bad news, but if you’re looking for aneffect that will cause it, look no further. The Color Halftone filter takeseach channel of color, divides the image into rectangles, and thenreplaces them with circles, similar to halftone screens. Crystallize usespolygonal shapes, Facet uses block shapes, and Mosaic uses squareblocks. The other filters in this category do similar distortions.RenderRender filters can be used to create cloud patterns, refraction patterns,and light reflections in an image. The patterns that can be created can beused as special effect backgrounds. To create a background using a cloud pattern, for instance, start witha new canvas and choose Filter>Render>Clouds. A cloud pattern will fillthe area using the foreground and background colors in the toolbox. Youcan then apply other filters, such as Filter>Blur>Radial Blur or Filter>Distort>Ocean Ripple for more effect. Lighting effects let you create effects on RGB images using variouslighting styles. Using the Lighting Effects dialog box, as shown in Figure20-4, you can create light from any direction, choose a spotlight, usedirectional or omni light, configure intensity and focus, and more.Figure 20-4: The Lighting Effects dialog box368 Part IV / More Tools. Note: Remember, you can apply filters to selections too, not just entire layers. Sharpen You’ve already been introduced to the Unsharp Mask command, and there are other sharpen tools as well. Sharpening an image results in cleaner edges, a less blurry image, and clarity improvement. Most images can be sharpened quite a bit prior to screen printing them and these filters should be used generously.] Tip: Sharpen filters can be used to repair blurry photographs! They can also be used after selecting a part of an image that’s blurry to sharpen only the object that was in motion as you snapped the picture. Sketch These filters add texture to an image and can be used like the artistic and brush strokes filters. Examples of sketch filters include Chalk & Charcoal, Conté Crayon, Graphic Pen, Photocopy, Plaster, Torn Edges, and Water Paper. Stylize These filters produce a painted or impressionistic effect by increasing the contrast in the image. Figure 20-5 shows before and after pictures of the OrangesII.jpg file. The filter applied is Filter>Stylize>Glowing Edges. I use this filter quite a bit for creating images for printing on black shirts—concert shirts, motorcycle shirts, etc. Chapter 20 / Special Effects 369Figure 20-5: Using the stylize filtersIf you’d like to experiment with this filter, open the OrangesII.jpg filefrom the Chapter 20 folder on the companion CD, and apply the filter.While you’re at it, try the Extrude, Solarize, and Wind filters.TextureTexture filters add texture to an image to make it look like you couldreach out and touch it and actually feel the texture that you’ve applied.Texture options include Craquelure, which gives the image a crackedlook, Grain, Mosaic Tiles, Patchwork, Stained Glass, and Texturizer.Stained Glass is a nice one to try if you need to create a logo for a church,while Mosaic Tiles might work for a handyman.VideoThe Video filter options let you deinterlace and apply NTSC colors.Video filters are used for creating artwork for video or TV.370 Part IV / More Tools Other and Digimarc Use Other to create your own filters to modify masks, make color adjust- ments, and offset a selection in an image. The filters you create can also be saved for later use. Digimarc filters embed copyright information into an image using a watermark. These topics are beyond the scope of this chapter and book. Extract Extract lets you remove an object or objects from an image and works when other options don’t (like the Background Eraser tool or the Magic Eraser tool). With the Extract option, you can trace around an image to select it for removal using a large highlighter-type pen, fill that area with color, and extract it from the image. Sometimes it’s difficult to use the eraser tools, especially when the image you’re working with is a photo- graph and edges and colors are poorly defined or extremely similar in color. The Extract tool works when you want to “Photoshop out” a per- son in an image and place him or her in another photo, like what’s shown later in Figure 20-7. In what situat ...