There is a right way and a wrong way to convert the images. The 'wrong' way, or perhaps the easy way, is use the desaturate function (click on "image", "adjustments" and "desaturate" in Photoshop). This simply discards all color information. The better way, which gives you a lot more control over exactly how certain colors are converted into black and white is to use the Channel Mixer. Click on "image" "adjustments" and "channel mixer". Then make sure the "Monochrome" checkbox is selected. Now, by moving the "Red", "Green" and ""Blue" sliders about, you will be able to adjust the individual brightnesses of specific colors. Very subtle changes in how you choose to convert the colors will lead to strikingly different effects. As always, the proof of the picture is in the seeing, and the examples below amply demonstrates the power of this technique.
http://www.illustratedphotography.com/files/fck-files/digital-black-and-white-photography-6.jpg
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