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Old May 20th, 2008 -   #4 (permalink)
dsclothing
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Default Re: converting a b&w photo into a 2 color halftone

Quote:
Originally Posted by Sheepsalt
1. Choose Image > Mode > bitmap

2. choose Halftone Screen from the Use menu; then click OK. The Halftone Screen dialog box opens.

3. For Frequency, enter a value for the screen frequency, and choose a unit of measurement. (for me, using a 160-mesh screen I go 50 Lines per Inch. For 280 or 305-mesh, I use 55 LPI)

4. Enter a value for the screen angle in degrees (56 degrees should work pretty well for what you're doing)

5. Choose the dot shape (I use elipse)

6. Click OK

Now you'll end up with an image with black dots on a white background. If you need to remove the white background, convert it back to Greyscale mode, unlock the 'background' layer (double click on it in the 'layer' pallet), select the magic wand - set Tolerance to '1', uncheck 'Contiguous', and click anywhere on the white background. When your computer is ready, press ctrl-x to 'cut pixels', and the white will all go away leaving only the black dots. Then you can do a color overlay to change the color of the dots if necessary.

Oh, that's for CS2... I'm not sure if everything is exactly the same in other versions, but should be close.
Thanks for the reply,

Whats the price difference (if there is one) between 160-mesh and a 305-mesh, also, I'm using 200DPI.

Last edited by dsclothing; May 20th, 2008 at 12:56 PM.