LITHOGRAPHIC EFFECT

METHOD I.

1. Image > Mode - Grayscale
2. Filter > Sharpen > Un-sharp Mask (maximum 500, radius 1 to 2, threshold 0)
3. Filter > Artistic > Poster Edges (adjust / experiment / play)
4. Image > Adjust > Threshold (adjust /experiment /play)

METHOD 2. (Which I prefer)

1. Image > Mode > Grayscale
2. Lower contrast to give good detail in both shadows & highlights
3. Filter > Sharpen > Un-sharp Mask (maximum 500, radius 1 to 2, threshold 0)
4. Image > Adjust > Threshold (adjust / experiment / play)

By David Garnham 29.1.06