Contax G Biogon 21mm f/2.8

no photoManufacturer's Description:

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Availability
Discontinued more info Yes Contribute
Year announced No Data Contribute
General
Lens Mounts
  • Contax G
 Contribute
Focal Type Wide Contribute
Lens
Focal Length more info 21mm Contribute
Angle of View more info 92° Contribute
Max Aperture more info f/2.8 Contribute
Min Aperture more info f/22 Contribute
Filter Size more info 55mm Contribute
Stabilised No Contribute
35mm equivalent No Data Contribute
Internal focusing more info No Data Contribute
Maximum magnification more info No Data Contribute
Focusing
Min Focus 50cm Contribute
Macro more info No Contribute
Focusing modes more info
    		Contribute
    Construction
    Blades 7 Contribute
    Elements 9 Contribute
    Groups 7 Contribute
    Weather-sealed more info No Data Contribute
    Box Contents
    Box Contents more info No Data Contribute
    Dimensions
    Weight 180g Contribute
    Height 35mm Contribute
    Diameter 59mm Contribute
    MTF Data
    Effective focal length 21mm Contribute
    Weighted MTF 21 mm: f2.8 0.79 | f4 0.84 | f8 0.84 Contribute
    Average Weighted MTF 0.84 Contribute
    Weighted MTF 10 lp/mm 0.91 Contribute
    Weighted MTF 20 lp/mm 0.81 Contribute
    Weighted MTF 40 lp/mm 0.61 Contribute
    Distortion No Data Contribute
    Grade 4.3 Contribute
    Photodo MTF Score 4.3 Contribute

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