L12DC4P 1/2" 12mm DC type Auto-Iris with 4-pin, CS-mount
Compatible with 1/2", 1/3" & 1/4" Cameras
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Focal Length: 12mm
Maximum Relative Aperture: 1:1.4
Iris: F1.4~Approx. F360 With ND Spot Filter
Mount: CS-mount (Adjustable Lens Position)
Minimum Object Distance: 0.3m (from front vertex)
Angular Field of View:
1/2": 29.9° x 22.6°
1/3": 22.6° x 17.1° 
1/4": 17.1° x 12.8° 
Optical Back Focal Distance: 13.87mm (in air)
Operation:
Focus: Manual
Iris: IG (Auto-Close System)
Operation Voltage:
Close to Open: Less than 3V
Open to Close: More than 0.5V
Operation Temp: -10 ~ +50°C (+14 ~ 122°F)
Filter Size: 30.5mm P0.5
Size, Approx. Weight: ø41.5 x 51 x 42mm (w/h/d), 60g
(Approx. ø1.6 x 2.0 x 1.7in., 2.1oz.)