Rainbow L8DC4P 1/2" 8mm DC Type Auto Iris CCTV Lens


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  • Focal Length: 8mm
  • Iris: F1.3-Equivalent to F360
  • Mount: CS-mount (Adjustable Lens Position)
  • DC type with 4-pin
  • Optical Back Focal Distance: 13.93mm (in air)


Rainbow CCTV

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The Rainbow L8DC4P is a great cs mount cctv lens with a 4 pin DC type auto iris. The L8DC4P also is a 1/3inch lens yet is compatible with 1/3" and 1/4" format security cameras. Furthermore the Rainbow L8DC4P has a 8mm fixed focal length. L8DC4P Features: ■ 8mm ■ F1.2 ■ DC type with 4-pin L8DC4P Specifications: L8DC4P 1/3" 8mm DC type Auto-Iris with 4-pin, CS-mount Compatible with 1/3" & 1/4" Cameras Focal Length: 8mm Maximum Relative Aperture: 1:1.3 Iris: F1.3-Equivalent to F360 Mount: CS-mount (Adjustable Lens Position) Minimum Object Distance: 0.1m (from front vertex) Angular Field of View: 1/3": 33.4° x 25.4° -- 1/4": 25.4° x 19.1° Optical Back Focal Distance: 10.7mm (in air) Operation: Focus: Manual Iris: IG (Auto-Close System) Operation Voltage: Close-Open: 3V, Open-Close: > 0.5V Operation Temp: -10 ~ +50°C (+14 ~ 122°F) Filter Size: None Weight: Approx. 50g

Product information Product Dimensions 2.3 x 2.3 x 2.9 inches Item Weight 1.6 ounces ASIN B002SYQ0SC Item model number LYSB002SYQ0SC-ELECTRNCS

but has Spherical Aberration notable with Night time Astronomy
OK, that is a non standard use of a Surveillance lens, and especially for a lens I paid $15 for.
I mounted this on a camera with type 1/3 sensor, and did find the DC iris to be very quick
the lens does focus using a small ring on the back of the camera. If you're looking for a lens
that will provide decent facial recognition in a clearly delineated area (IE entrance way) you'll be
fine. Just be aware of the width you want in focus.