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