Description | Industrial lens by Carl Zeiss |
Articlenumber (Eureca): | 06.11.0116 |
Origin: | Germany |
Manufacturer: | Carl Zeiss |
Designation | Biogon T* 2.8/21mm Z-M42-I |
Old Designation | Biogon T* 2.8/21 M42-I |
Manufacturer ID | 2115-207 |
Focal length | 21 mm |
Mount | M42 |
Aperture range | 2.8–22 |
Lens elements / Groups | 9 / 7 |
Min. free working distance [mm] | 420–∞ mm |
Min. free working distance [ft] | 1.38–∞ ft |
Angular Field diag. / hor. / vert. | 90 / 80 / 58 ° (35 mm Format) |
Diameter of image field [mm] | 43 mm |
Diameter of image field [inch] | 1.7 ″ |
Flange focal distance [mm] | 26.8 mm |
Coverage at close range [mm] | 47 × 71 mm × mm |
Image ratio at MOD | 1:2.1 |
Filter thread | M46 × 0.75 |
Weight | 300 g |
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Last update: 09.11.2023
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