The Canon Demi C is a half-frame 35mm viewfinder camera introduced by Canon in the 1960s, part of the Demi series aimed at photographers wanting to double the number of exposures from a standard roll of film. It was positioned as a compact everyday camera in Canon's consumer line-up.

At recent UK auction, hammer prices for the Demi C have sat around £100–£110, with a median close to £106 based on two recorded sales between 2022 and 2024. As of today the sample is small, so individual results can vary with cosmetic condition and whether the camera is working.