This tutorial will show you how convert a coloured photo to a halftone artwork. Halftone is a technique to minimize the cost of printing. Easy done in CorelDraw. Results can be very creative.
Here is the video link.
I am doing halftones of colored photos to use them in sandcarvings. I am having trouble with making my halftone into a negative. also I have to print in cmyk and I am using a canon mp620 printer and can not find the cmyk setting. any suggestions