ocr: Converting a Color Image to Grayscale lurning a color image into a grayscale (black and white) image is usetul for a number of - reasons: to make b/w print proofs, create artistic effect, reduce file sze, or make a quotone, etc. Toc convert a color image into a grayscale image: 1.0pen the image. 2. Click Edit on the M ain M enu, and choose To 8-bit Grayscale from the drop-down menu. DOITFORME INDEX