Monday, February 28, 2011

Halftone

The process of creating a halftone begins with a greyscale image that is approximately 200dpi. Create the image in Photoshop by changing the greyscale image into a bitmap image. Bitmap setting should beas follows for a 155 mesh count screen.

Output resolution 200dpi
Select halftone bitmap image
Screen angle for one screen seperation is 45 degrees
Dot shape is elipse
Frequency is approximately 30 lpi

Before printing to film, print out a laser version to determine if the dot pattern lines up properly. It is impossible to predict the line patterns on screen because of the dot patterns on the monitor.

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