Screen Printing: Posterization of an Image using Adobe Photoshop Graphic Comm. II Mr. Jarrett

Lesson Objectives Changing to Grayscale Resizing & Cropping Adjusting Contrast Levels Posterization Filter Separating Layers Applying Color

Original Image

Changing to Grayscale Step 1: Image > Mode > Grayscale

Resizing & Cropping Step 2: Measure the dimension of the shirt you wish to print on To resize go to: Image > Image Size Here set the size dimensions

Adjusting Contrast Levels Step 3: You need adjust the contrast levels to bring out the details in the image Go to: Image > Adjustments > Levels Here adjust the contrast levels using the levels histogram

Posterization Filter Step 4: Next posterize the image so that the colors can be separated into different layers Go to: Filters > Artistic > Poster Edges Here adjust settings to give you the desired effect

Separating Layers Step 5: Separating the color layers can be the hardest part Go to: Select > Color Range Here use the eyedropper tool to select the Blacks Once selected: Copy & Paste it onto a new layer

Separating Layers Step 6: Repeat Step 5 Go to: Select > Color Range Here use the eyedropper tool to select the Grays Once selected: Copy & Paste it onto a new layer

Applying Color Step 7: Change your document back into an RGB file Image>Mode>RGB Then change the gray layer into a color The resulting image should look something like this