February '18

For the Business of Apparel Decorating

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Three common ways to create masks are manually, from layer, and from color range. To clean up separations with masks, delete the ar- eas you want to remove to white. You can also do this to adjust halftones for each channel. 2 0 1 8 F E B R U A R Y P R I N T W E A R || 51 to the selection (shift—command—click) on all the masks above it. Once you have the selection, you will fill it to black on your mask. This "knocks out" any layers that were on top. Repeat this process for the remainder of the channels. Once you have completed all the knock outs, combine the masks that belong together. Masking from color range—Using color range (select—color range), you can create masks for the standard colors, or you can use the eyedropper to select colors that are not on the default list. When choosing a custom color, I recommend starting the fuzziness at 50, then adjusting as necessary. Choose a color with color range to create a custom selection, then click the "save selec- tion as channel" button (located at the bot- tom of your channels window). Repeat this process for each mask you wish to make. USING CALCULATIONS FOR SIMULATED-PROCESS SEPARATIONS You can use Photoshop in many ways to separate your image. Here, I'll go over a method using "calculations" in order to mix and locate certain colors. Creating your working channels—First, create five channels (spot color, 100 percent solidity). These will be for locating your col- or and will eventually be deleted once your separation is complete. Name the channels C, M, Y, K, T. Change your document to CMYK and copy the channel cyan and paste it into C; copy magenta and paste it to M; copy yellow and paste it to Y; copy black and paste it to K. The T channel is your "target" working channel. Leave that empty for now. Creating your separation channels— Next, you will set up the channels for your separation. First, create a channel (spot color, 100 percent solidity) and title it "background." This will be your shirt color and will be located under your color channels. Next, create a new channel and change the color by clicking on the color box and selecting a new color with the eyedropper. I recommend having a second image open for grabbing colors. Make sure

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