Computers and Electronics What is a Canon Solution Disc? What is EOS Digital? Canon EOS (Electro-Optical System) is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc. ... Since 2005, all newly announced EOS cameras have used digital image sensors rather than film. Related Posts:Can I use EF-M lenses on EF camera?Which DSLR is best for photography?What lens fits on a Canon T5i?What is the price of Canon D?