Lithographic Effect

Method 1

●   Image > Mode > Greyscale

●   Filter > Sharpen > Unsharp mask (maximum 500, radius 1 to 2, threshold 0)

●   Filter > Artistic > Poster edges (adjust / experiment / play)

●   Image > Adjust > Threshold (adjust /experiment /play)

Method 2

●   Image > Mode > Greyscale

●   Lower contrast to give good detail in both shadows & highlights

●   Filter > Sharpen > Unsharp mask (maximum 500, radius 1 to 2, threshold 0)

●   Image > Adjust > Threshold (adjust / experiment / play)