Canon's 35mm film rangefinder system with a wide range of lenses from 25mm to 1000mm in standard thread mounts, as well as the unique bayonet mount of the 50mm f/0.95 lens, the world's fastest, "four times brighter than the human eye". The range of exposures provided by Canon lenses permited either the amateur or professional photographer to portray the subject matter to the best effect with the assurance of brilliance, contrast, resolution and true color fidelity.