The Diax IIb is a compact rangefinder camera produced by German manufacturer Walter Voss. Production began in 1947, and over time 100,000 cameras were sold. The "b" models had film advance levers rather than knobs.

• Standard lens: Schneider-Kreuznach 50mm f2.8 Xenar
• Shutter Speeds: 1s - 1/500th, plus B
• ISO Range: Reminder only, 10-400.
• Finder: 2 finders. One 1:1 magnification finder for standard lenses, with coupled rangefinder. One light zoom viewfinder for 85/90mm lenses.