Canon's updated screw rangefinder — the IVSB2, Leica-thread, cloth shutter, flash sync, 1954.
The Canon IVSB2 was a 35mm screw-mount rangefinder from 1954, an updated version of the IVSB with revised flash synchronisation and detail changes. It continued Canon's higher-tier Leica-thread rangefinder line into the mid-1950s.
It is a 35mm coupled-rangefinder camera taking Leica-thread lenses, with a horizontal-travel cloth focal-plane shutter reaching high top speeds and an updated flash-sync arrangement, and no built-in meter. It uses Canon's combined rangefinder and viewfinder window with switchable magnification, and the shutter is fully mechanical and battery-free.
It suits collectors and photographers wanting a capable Leica-thread rangefinder for street, travel and documentary work with improved flash handling. The multi-magnification finder supports composing and focusing across a range of lenses.
Check rangefinder patch contrast and vertical alignment and confirm the finder magnification switching works. Inspect the cloth curtains for pinholes and capping, test slow speeds and flash sync, and look for finder haze. Leica-thread lenses adapt to mirrorless via LTM adapters; verify a clean thread mount and smooth film transport.