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Chapter 7. Black & White: Photoshop in B... > Using the Lightness Channel - Pg. 186

The Photoshop CS2 Book for Digital Photographers Using the Lightness Channel This is one of the most popular methods for converting from color to grayscale, as it lets you isolate just the luminosity in the photo, separating out the color; and by doing so, you often end up with a pretty good grayscale image. However, since this uses the Lightness channel, we also add one little twist that lets you "dial in" a perfect grayscale photo almost every time. The most important thing for you to do in this chapter is to try all the different grayscale methods to decide which one you like best. Step One: Open the color RGB photo that you want to convert to grayscale using the Lightness channel method.