Fixed Iris Lens

Home Security with a CCTV Monitoring System

If you’ve given any thought to home security you’ve probably considered a closed circuit television monitoring system (better known as CCTV.)

What you’ll have with your CCTV system is at least one surveillance camera, a variety of lenses (pan, zoom and infrared for night vision) to focus on particular areas of your grounds and home, and a VCR (video cassette recorder) that will make a permanent record of what the camera is seeing.

If you should decide you want to provide CCTV security in your home you’ll need to do at least one slow walk around your home, making notes as you go, about where you need surveillance, and what areas are the most vulnerable, and in need of protection. While you certainly want to focus on your house – the place where your family’s safety is the primary concern – don’t neglect to include garage, breezeway, in-law quarters, front and back yard, driveway, alleyway, or any outside fence or gate entrance.

You may want more than one camera in your home. This could be important if your home is large, for instance, and you’re regularly in one section of the home while a babysitter watches your children, or a housekeeper performs his or her duties. With the prevalence of home offices this may be especially important, if you’re in your office all day with the door shut. Having a separate camera watching that home office may also reduce your insurance bill as well.

Once you’ve determined what areas on which you need to focus you’ll have to measure the areas. The range of area needing monitoring is important to the size of camera or cameras you purchase.

While you can choose five sizes of camera – ranging in size from one quarter to two thirds of an inch, the wisest choices are to go no larger than one half an inch. With a camera one half inch or smaller you’ll have a more extensive choice of lenses that will work with it.

There are four different versions of CCTV camera lenses from which you can choose. They are fixed aperture, manual or auto iris and zoom. An auto iris lens is ideal for outside viewing, as it adjusts itself to accommodate changes in lighting. In places where the amount of lighting stays fairly stagnant a manual iris will do. This type of lens requires that you actually make the lighting adjustments by hand. Zoom lenses, just as with any camera, allow you to bring a viewed situation closer to your eye for improved visibility. Some zoom lenses offer a motorized option.

Once you know the number of cameras you’re going to need you’ll know whether you’re going to have to have more than one monitor or whether you can make do with a switcher (one monitor, alternating location views) or a multi-plexer (several locations showing in boxes on one monitor at the same time).

Decide how long you are going to need to record prior to being able to remove and replace the VCR film. If the time you’re going to be absent from the home, i.e., unable to remove and replace the VCR tape, is going to exceed 4-6 hours (depending on the VCR) you may not be able to use your household VCR. You may need to upgrade to a commercial quality recorder.

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Pars Plana Lensectomy Vitrectomy Iris Suture in Eye with Cataract, Iris, Lens, Choroidal Coloboma

2.8mm~16mm Fixed IRIS Lens Set for Webcams and Security/CCTV Cameras 6-Lens Pack $12.99

CCTV Camera 25mm Focus Length IR Fixed Iris Lens $9.12

Replacement CCTV Camera CS Mount 4mm Fixed Iris Lens $13.34

Replacement F1.2 6mm Fixed Iris Lens for CCTV Camera $9.12

Blk Replacement CCTV Camera F1.2 2.1mm Fixed Iris Lens $11.14

Rainbow H35ECS 1/2″ 3.5mm Fixed Focal Length Video Type Auto Iris CCTV Lens $69.00

Samsung Built-in Auto Iris Fixed Lens CCTV SCD-2030 $125.00

NEW FUJINON DF12B-SND4-1 TV LENS 1:1.2/12mm Fixed Focal Length Manual Focus Iris $73.68

Monofocal Fixed Iris Board Mount Lenses (set of 6 from 3.6 to 16.0mm) / MTV Lens $17.99

ARECONT VISION LENS6.0 Arecont 6mm, 1/2in, f2.0, Fixed Iris $186.00

BOSCH LTC 1423/20 FLEXIDOME II,1/4 ,470 TVL,W/ 6MM FIXED IRIS LENS $198.00

ARECONT VISION MPL1.55 1.55MM FIXED FOCAL MP LENS 1/2″F2.0 FIXED IRIS $103.00

CCTV Replacement 12mm F1.2 CS Manual IR Fixed Iris Lens $6.92

1/3″ Format IR Fixed Iris Lens for CCTV Camera Black $12.44

CCTV Safety Camera 12mm 1/3″ Format IR Fixed Iris Lens $7.92

6mm 1/3″ Format IR Fixed Iris Lens or CCTV Camera $8.17

CCTV Safety Camera 1/3″ Format IR Fixed Iris Lens 6mm $8.40

F2.0 3.6mm CS Lens Fixed IRIS Surveillance CCTV Camera $4.45

1/3″ CS Fixed IRIS CCTV Surveillance Camera Lens 12mm $7.80

8mm Fixed Iris F1.2 CS Mount CCTV Camera Lens 1/3″ $10.32

EVERFOCUS FL1220 CCTV BOARD 12MM LENS FIX IRIS $19.00

CCTV Replacement 12mm F1.2 CS Manual IR Fixed Iris Lens $10.88

Focus 12mm IR Fixed Iris Lens for CCTV Security Camera $8.10

CCTV Camera CS Mount 12mm Focal Length Fixed Iris Lens $8.15

CCTV Security Camera 8mm 1/3″ Format IR Fixed Iris Lens $8.09

CCTV Camera 1/3″ 16mm Focal Length IR Fixed Iris Lens $11.09

F2.0 12mm CS Lens Fixed IRIS Surveillance CCTV Camera $9.52

CCTV 1/3″ Camera 16mm Focal Length Fixed Iris Lens $7.59

Replacement 12mm CCTV Camera Manual Fixed Iris Lens $6.95

CCTV Camera F1.2 2.1mm Focal Length Fixed Iris Lens $11.24

1/3″ CS Fixed IRIS CCTV Surveillance Camera Lens 12mm $8.15

Manual Focus 16mm IR Fixed Iris Lens for CCTV Camera $11.13

F2.0 1/3″ 16mm CS Lens Fixed IRIS for CCTV Box Camera $6.59

CCTV Camera F1.2 2.1mm Focal Length Fixed Iris Lens $11.20

Focus 12mm IR Fixed Iris Lens for CCTV Security Camera $8.09

Focus 4mm IR Fixed Iris Lens for CCTV Security Camera $8.34

8mm Fixed Iris F1.2 CS Mount CCTV Camera Lens 1/3″ $6.95

Blk Replacement CCTV Camera F1.2 2.1mm Fixed Iris Lens $11.26

Safety CCTV Camera Replace F1.2 2.1mm Fixed Iris Lens $11.34

12.0mm CCTV Monofocal Fixed Iris Board Mount Lens / MTV Lens / Mini Lens $4.99

F1.2 6mm Focal Length Fixed Iris Lens for CCTV Camera $7.97

F2.0 8mm CS Lens Fixed IRIS Surveillance CCTV Camera $5.62

CCTV Safety Camera 1/3″ Format IR Fixed Iris Lens 6mm $7.94

1/3″ CS F1.2 Fixed IRIS CCTV Surveillance Lens 12mm $6.47

Focus 4mm IR Fixed Iris Lens for CCTV Security Camera $8.08

4mm Fixed Iris IR Infrared Lens 1/3 CS F1.2 CCTV Camera $7.99

3.7mm Focal Length 1/3″ Format Pinhole Fixed Iris Lens $8.15

1/3″ CS Mount 6mm Fixed Iris IR Security Camera Lens $6.84

1/3″ CS F1.2 Fixed IRIS CCTV Surveillance Lens 12mm $6.69

CCTV Camera CS Mount 12mm Focal Length Fixed Iris Lens $8.13

LOT 5 2.5MM 2.5 MM CCTV Camera Lens CS Fixed-Iris New $41.90

CCTV Camera 1/3″ 16mm Focal Length IR Fixed Iris Lens $11.11

Varifocal – Fixed Iris, M12 Mount, CCTV Lens 9-22mm IR (Day/Night) $23.69

3.7mm F2.0 Pinhole Fixed Iris Lens for C mount Camera $7.92

CCTV Security Camera 8mm 1/3″ Format IR Fixed Iris Lens $8.32

F2.0 3.6mm CS Lens Fixed IRIS Surveillance CCTV Camera $5.03

F1.2 6mm Focal Length Fixed Iris Lens for CCTV Camera $8.16

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