The Canon IX was the flagship among all the SLR cameras for the APS film system. It was a camera body with built-in flash for Canon's EF lenses which were usually used with EOS camera bodies for 35mm film. So this camera happened to become the prototype for the later DSLR cameras with CCD-sensor chip in APS-format.
image by Maike Caine
images by Sim Vahur
film cartridge slot open
with kit lens, image by Jim Eckberg