Zeiss Biogon T* 2.8/21 ZM

Specifications:

Focal Length 21 mm
Min. Aperture f/2.8  
Max. Aperture f/22  
Blades: 10  
Elements: 9  
Groups: 7  
Min. Foc. Dist. 0.5 m
AF: no  
Stabilization: no  
Class: Full Frame  
Mount: M  
Filter: 46 mm
Length: 75.0 mm
Diameter: 53.0 mm
Weight: 280 g
Launch: 2005  

Results:

Resolving Power: 873 σ = 0.0
Contrast: 909 σ = 0.0
Color: 898 σ = 0.0
Bokeh: 887 σ = 0.0
Star: 852 σ = 0.0
Distortion: 815 σ = 0.0
Falloff: 794 σ = 0.0
Flare: 806 σ = 0.0
LaCA: 784 σ = 0.0
LoCA: 799 σ = 0.0
LenScore™ 845 σ = 0.0

Number of lenses measured: 1
 

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