Digital Photographer's Software Guide - Bertemes - Net

Summary
Chapter 13 ■ Film Simulation and Effects 171
There are several ways to convert images to black and white—the unsatisfactory desaturate
method; converting to grayscale; converting to Lab mode; or using a channel mixer
to vary the influence of each red, green, or blue channel on the final black and white
image. The best approach is to use specialist conversion software, like the products
described in this chapter. Only then can you get results that would impress a photographer
who has spent years in a darkroom with papers and chemicals. Black and white
converters can also simulate chemical processing techniques, along with the actual
papers that were used in the pre-digital era.