ZEISS Interlock 2.8/21
商品類別:ZEISS 機器視覺工業鏡頭
ZEISS Interlock Lenses - Professional lenses with optimized locking screws
Focal Length : 21mm
Max. Aperture : 2.8
Min. Free Working Distance : 90mm
Filter Thread : M82 × 0.75
Camera Mount : F-Mount , M42
Features
● f/2.8 aperture
● Precise manual focusing
● Robust full-metal construction
● Continuous aperture setting or click stop
● For industrial cameras up to sensor sizes of 24×36 mm or 41mm line sensors
● Wide angle lens with highest optical performance
● Features special screws to fix focus and aperture settings even in rough situations
● High contrast over the entire image field
Optical data
Focal length | 21mm |
Aperture range | f/2.8 – f/22 (1/ 2 stop intervals or continuous) |
Number of elements / groups | 16 / 13 |
Min. working distance (object to sensor) | 220mm (0.72 ft.) - ∞ |
Min. free working distance | 90mm (0.29 ft.) - ∞ |
Angular field* (diag. / horiz. / vert.) | 90 / 81 / 59° |
Max. diameter of image field | 43mm (1.7") |
Flange focal length | F-Mount : 46.5mm (1.8") ; M42-Mount : 45.5mm |
Coverage at close range | 120 × 180mm (4.7 × 7.1") ; line : 215mm (8.4”) |
Image ratio at close range | 1:5 |
Filter-thread | M82 × 0.75 |
Weight | 785g (1.7 lbs.) |
Camera mount | F bayonet , M42 |
* referring to 35mm format
Relative Illuminance*
Relative Distortion*
* Data for infinite focus setting
MTF Charts*
* Data for infinite focus setting
Spectral Transmission