Contax Carl Zeiss 21mm f/2.8 Biogon

The Contax Carl Zeiss 21mm f/2.8 Biogon is a manual focus wide-angle prime lens associated with the Contax G rangefinder system, delivering the optical character that made Contax glass legendary among film photographers. Note: the Biogon optical formula is a rangefinder design — if the copy you're looking at has a Contax/Yashica SLR mount, that version is branded Distagon rather than Biogon, so always confirm the mount and branding on the specific listing before purchasing.

Key Specifications

• Focal length: 21mm prime
• Maximum aperture: f/2.8
• Lens type: Wide angle
• Focus system: Manual focus only
• Optical design: Biogon T* coating
• Prime or zoom: Prime
• Fit: Contax G mount (rangefinder system)

Who is this lens for?

If you shoot landscapes, street photography or travel on film, a 21mm wide-angle prime gives you dramatic foreground depth without distortion breathing down your neck. The Biogon design is well regarded for keeping straight lines honest at the edges — exactly what architecture and urban photographers need. One practical note: at 21mm the field of view is wide enough that it can obscure the built-in viewfinder on rangefinder bodies, so many shooters attach an external optical viewfinder in the accessory shoe. It pairs naturally with a 35mm film body, and because there's no autofocus motor to worry about, the lens stays compact and silent. Shooters already exploring the broader world of Contax lenses will feel right at home with it. If you're weighing alternatives, the Voigtlander 21mm f/1.8 gives you a stop and a third of extra light but at a larger physical size, while the Leica Elmarit-M 21mm f/2.8 ASPH sits in a similar optical class at a considerably higher price point. Every used copy on Camera-tweedehands.nl comes with a minimum 12 months warranty and is individually photographed so you know exactly what you're getting.