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Zeiss ZM 28mm f/2.8 C-Biogon T*
Last updated 2010-02-15 - Send Feedback
Related: Leica, Leica M, Zeiss Biogon, Zeiss ZM, Zeiss ZM 28mm f/2.8 C-Biogon
Related: Leica, Leica M, Zeiss Biogon, Zeiss ZM, Zeiss ZM 28mm f/2.8 C-Biogon
The Zeiss ZM 28mm f/2.8 C-Biogon (about $1005) is a relatively inexpensive 28mm lens of very compact dimensions and light weight.
Composing with the 28/2.8 Biogon can use the optional 25/28mm ZI viewfinder, or the built in frame lines of the Leica M9. The rectangular lens hood is also advised.
Image quality
Not yet tested.
MTF charts suggest that this lens has some field curvature, typical for a 28mm design.
Specifications
Per Zeiss. See the datasheet.
| Focal length: | 28mm |
| Aperture scale: | f/2.8 - f/22 |
| Focusing range: | 0.5m - infinity |
| Angular field, diag./horiz./vert | 75/65/46 ° |
| Coverage at close range: | 37 cm x 55 cm |
| Image ratio at close range: | 1:16 |
| Number of elements/groups: | 8 elements in 6 groups |
| Filter thread: | M 46 x 0.75 |
| Weight: | 230g |
| Dimensions (with caps): | ø 53 mm, length 62 mm |
Distortion
The barrel distortion of the 28/2.8 Biogon is only about 1% by the far corners, excellent for a 28mm lens.
Distortion of the Zeiss ZM 25/2.8 Biogon
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