Motorised zoom lenses are commonly used on closed-circuit television (CCTV) cameras -- better known as security surveillance cameras. When affixed to the front of a security camera, they allow up to 20x zoom capability, depending on the model. This lets the user isolate a specific part of the scene -- such as a thief in the act or the number plate number of a getaway car -- and enlarge it for greater scrutiny. Because of the basic construction of most motorised zoom lenses, they are simple to install and operate.
- Skill level:
- Moderately Easy
Other People Are Reading
Things you need
- CCTV camera
- Display monitor
- Zoom/focus controller
Mount the lens by screwing it clockwise into the camera head.
Connect the 200mm Auto-iris cable to the appropriate socket (4-pin) on the camera head. This ensures proper exposure of the image by automatically controlling the amount of light that passes through the lens.
Insert one end of the 400mm zoom/focus control cable into the appropriate socket (8-pin) on a zoom/focus controller.
Connect the camera to a surveillance monitor. Attach both the camera and the monitor to a power supply.
Adjust the "LEVEL" and "ALC" knobs on the zoom/focus controller until a picture is displayed on the monitor.
Tips and warnings
- Most lenses arrive with an Auto-iris and zoom/focus controller cable. If you have purchased a lens without these cables, contact the manufacturer for replacements. Spare zoom/focus controllers may also be purchased through the manufacturer.
- Do not aim the lens at the sun. Doing so may cause loss of eyesight, damage to the optics or a risk of fire.
- 20 of the funniest online reviews ever
- 14 Biggest lies people tell in online dating sites
- Hilarious things Google thinks you're trying to search for