Compare Zeiss Biogon T* 2.8/28 ZM vs Zeiss Biogon T* 2.8/21 ZM vs Zeiss C Sonnar T* 1.5/50 ZM
Construction
Colors
Silver or black
Silver or black
Silver or black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Leica M-mount
Leica M-mount
Leica M-mount
Material
metal barrel, metal mount
metal barrel, metal mount
Optical Formula | Elements
8 elements
9 elements
6 elements
Optical Formula | Groups
6 groups
7 groups
4 groups
Dimensions
Filter Diameter
46 mm / 1.81 in
46 mm / 1.81 in
46 mm / 1.81 in
Size | Diameter
53 mm / 2.09 in
53 mm / 2.09 in
56 mm / 2.20 in
Size | Length
62 mm / 2.44 in
75 mm / 2.95 in
63 mm / 2.48 in
Weight
230 g / 8.13 oz
280 g / 9.89 oz
350 g / 12.37 oz
Function
Angle Of View
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical
91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/2.8 ~ f/22
f/2.8 ~ f/22
f/1.5 ~ f/16
Autofocus
No
No
No
Focal Length
28 mm
21 mm
50 mm
Image Stabilization
No
No
No
Weather Resistance
No
Performance
Max Magnification
0.063
0.048
0.067
Min Focus Distance
500 mm / 19.69 in
500 mm / 19.69 in
900 mm / 35.43 in
Reviews
Neofiliac score
70%
78%
86%
Pros
- Light in the hand
- Optional 25/28mm viewfinder available
- Good flare resistance
- Great build quality
- Good image quality
- Bright maximum aperture
- Quite compact and lightweight
- Solid build quality
Cons
- Low maximum magnification
- Lacks weather sealing
- Low maximum magnification
- Low maximum magnification
- Classic rendering not to everyone's taste
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