Photoshop

Apply the Color Halftone filter

  1. Choose Filter > Pixelate > Color Halftone.
  2. Enter a value in pixels for the maximum radius of a halftone dot, from 4 to 127.
  3. Enter a screen-angle value (the angle of the dot from the true horizontal) for one or more channels:

    • For Grayscale images, use only channel 1.

    • For RGB images, use channels 1, 2, and 3, which correspond to the red, green, and blue channels.

    • For CMYK images, use all four channels, which correspond to the cyan, magenta, yellow, and black channels.

    • Click Defaults to return all the screen angles to their default values.

  4. Click OK.