Multichannel mode

Multichannel mode uses 256 levels of gray in each channel. Multichannel images are useful for specialized printing. Multichannel mode images can be saved in Photoshop, Photoshop 2.0, Photoshop Raw, or Photoshop DCS 2.0 format.

These guidelines apply to converting images to Multichannel mode:

• Color channels in the original image become spot color channels in the converted image.
• When you convert a color image to multichannel, the new grayscale information is based on the color values of the pixels in each channel.
• Converting a CMYK image to multichannel creates cyan, magenta, yellow, and black spot channels.
• Converting an RGB image to multichannel creates cyan, magenta, and yellow spot channels.
• Deleting a channel from an RGB, CMYK, or Lab image automatically converts the image to Multichannel mode. (See About color channels for more information on channels.)
• To export a multichannel image, save it in Photoshop DCS 2.0 format.