Converting to Black & White With a B&W Adj Layer
Photoshop CS3 Tutorial
How to Convert Color Images to Black and White in Photoshop
Within Photoshop there are several ways to convert a color image to black and white. This method allows you to adjust the grayscale values and is a non-destructive process.
Open a color image in Photoshop (File > Open).
Click the Create New Adjustment Layer icon and select Black and White....
The adjustment layer dialog box appears. Make sure the Preview checkbox is selected.
Adjust the sliders to modify your image.
You can add a tint to your image by clicking the Tint checkbox and adjusting the sliders.
Press OK to accept the settings. You can change your settings simply by double clicking the Black & White adjustment layer icon.