Many speakers prefer them because they're quick, convenient, and accessible.
Dye sub full color overheads are the highest quality transparencies possible from computer files.
These can be produced from your computer creation of images and artwork. They provide optimum color saturation for bright projection, and are durable and scratch resistant. Infa-red two color overheads are produced from computer printouts or hard copy. These overheads are more economical with yellow or black copy on various color backgrounds.