Using the Black-and-White Command in photoshop

 Photoshop presents a proposed default black-and-white conversion


1. Click Auto to give Photoshop a chance to analyze your image and provide a
new conversion mix.
2. If you like, you can try one of the black-and-white presets available from the
drop-down list, or you can load a previously saved preset (click the icon next
to the Preset drop-down list and choose Load Preset to select one of your own
settings mix)

3. Alternatively, you can manipulate the reds, yellows, greens, cyans, blues, and
magentas sliders  until you achieve a conversion
that pleases you. Drag left to darken that color’s tones; to the right to
lighten those gray tones.
4. To add a colored tone to your monochrome image, click the Tint checkbox
and adjust the hue and saturation sliders until you get the toning you’d like
to add.
5. You can save your settings as a new preset by clicking the icon next to the
Preset drop-down box.

6. Click OK to apply the changes you’ve made. Compare the Black & White
command conversion with Photoshop’s Desaturate command conversion