Compare Zeiss Biogon T* 2.8/28 ZM vs Zeiss Biogon T* 2.8/21 ZM
Construction
Colors
Silver or black
Silver or black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Leica M-mount
Leica M-mount
Material
metal barrel, metal mount
Optical Formula | Elements
8 elements
9 elements
Optical Formula | Groups
6 groups
7 groups
Dimensions
Filter Diameter
46 mm / 1.81 in
46 mm / 1.81 in
Size | Diameter
53 mm / 2.09 in
53 mm / 2.09 in
Size | Length
62 mm / 2.44 in
75 mm / 2.95 in
Weight
230 g / 8.13 oz
280 g / 9.89 oz
Function
Angle Of View
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical
91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical
Aperture
f/2.8 ~ f/22
f/2.8 ~ f/22
Autofocus
No
No
Focal Length
28 mm
21 mm
Image Stabilization
No
No
Weather Resistance
No
Performance
Max Magnification
0.063
0.048
Min Focus Distance
500 mm / 19.69 in
500 mm / 19.69 in
Reviews
Neofiliac score
70%
78%
Pros
- Light in the hand
- Optional 25/28mm viewfinder available
- Good flare resistance
- Great build quality
- Good image quality
Cons
- Low maximum magnification
- Lacks weather sealing
- Low maximum magnification
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