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 length21mm
Aperture rangef/2.8 – f/22 (1/ 2 stop intervals or continuous)
Number of elements / groups16 / 13
Min. working distance (object to sensor)220mm (0.72 ft.) - ∞
Min. free working distance90mm (0.29 ft.) - ∞
Angular field* (diag. / horiz. / vert.)90 / 81 / 59°
Max. diameter of image field43mm (1.7")
Flange focal lengthF-Mount : 46.5mm (1.8") ; M42-Mount : 45.5mm
Coverage at close range120 × 180mm (4.7 × 7.1") ; line : 215mm (8.4”)
Image ratio at close range1:5
Filter-threadM82 × 0.75
Weight785g (1.7 lbs.)
Camera mountF bayonet , M42

* referring to 35mm format

  

Relative Illuminance*

Relative Illuminance

Relative Distortion*

Relative Distortion

* Data for infinite focus setting

 

MTF Charts*

MTFf28

MTFf56

* Data for infinite focus setting

 

Spectral Transmission

Spectral Transmission

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