Non-photo Blue - Change in Function

Change in Function

As of late, with digital scanning and image manipulation, non-photo blue fulfils its function in a different way. The artist can do his or her sketch and inking in the traditional method and scan the page. Most scanners will detect the light blue lines. However, shifting to greyscale and increasing the contrast and brightness will cause the blue to disappear. Another common approach involves replacing the blue channel with another channel – typically the red channel. The exact processes may differ depending on the scanner, settings and image-editing software, but the concept remains the same.