prime35mmcurrent
Zeiss Biogon T* 21mm f/2.8 ZM
Carl Zeiss · 2005-present
Ultra-wide Biogon with exceptional correction. Symmetrical design for excellent performance.
Known for
- Architecture
- Landscapes
- Interiors
Considerations
- Significant color shift on digital
- Needs external viewfinder
Optical Characteristics
Sharpness (wide)5/5
Sharpness (stopped)5/5
Contrast5/5
Flare Resistance5/5
CA Control4/5
Vignetting Control3/5
Distortion Control4/5
Common Issues
- Check rangefinder coupling
- Inspect focus mechanics
Buying Guide
Specifications
MountLeica M
Focal Length21mm
Max Aperturef/2.8
Min Aperturef/22
Aperture Blades9
Filter Size46mm
Weight300g
Optical Design
FormulaBiogon
Elements9
Groups7
CoatingZeiss T*
Pricing
£1000 - £1400
Typical used price
Mint: ~£1600
Adapts To
Sony ELeica SLLeica TLNikon ZCanon RF
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Last verified: Jan 2026Report an error