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The descriptions of lens are listed below. If you wish to replace or purchase an extra lens please specify in the remarks columns on your order form. |
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Fixed Focal Distance Lens. (For Standard & Dome type only; surcharge would be excluded regarding replacement lens for infrared camera) |
For Standard type For
Dome type |
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2.5mm Ultra Fish-eye Lens |
The shape of objects will appear to be distorted. Suitable for short distance filming as the images of long distance objects will become obscure. |
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3.6 & 4mm Wide-angle & Standard Lens |
The most common lens. |
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6 & 8mm Telescopic Lens |
For long distance shooting. |
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12 & 16mm Powerful telescopic Lens |
For ultra long distance shooting. |
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If you see a " (replaceable)" sign in our camera catalogue this means you are able to replace the camera's lens. Just specify which camera you would like to replace. A surcharge of $10 is required for some models to install Fish-eye Lens. |
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Adjusting the iris |
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| For a bright location we recommend a narrower iris lens such as F2.5 lens. F2.0 is the most popular standard lens. Wide iris lens, such as F1.2 lens are used in dim locations but it will be overexposed with light in bright locations. Auto iris lens will automatically adopt different amount of light, which is better but more expensive. | |||||||||||||||||||||||||||||||||||||||||||||
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Specifications for auto iris with fixed focal distance lenses. (For Standard type only) |
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4.0mmF1.2 Standard Lens |
6.0mmF1.4 |
8.0mmF1.2 Telescopic Lens |
12.0mmF1.4 Powerful telescopic Lens |
16.0mmF1.6 Powerful telescopic Lens
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Same price for every lens.$69.95. |
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Fixed iris+ manual focal lens, (For Standard type only) |
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3.5~8mmF1.4 manual focal lens |
Suitable for steady light. $54.95 |
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6~15mmF1.4 manual focal lens |
Suitable for steady light. $64.95 |
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Auto iris + Manual focal lens. (For Standard type only) |
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| 3.5~8mmF1.4 Auto iris + Manual focal lens | High quality with high cost. $79.95 | ||||||||||||||||||||||||||||||||||||||||||||
| 6~15mmF1.4 Auto iris + Manual focal lens | High quality with high cost. $84.95 | ||||||||||||||||||||||||||||||||||||||||||||
| 5~50mmF1.6 Auto iris + Manual focal lens | High quality with high cost. $149.95 | ||||||||||||||||||||||||||||||||||||||||||||
| 6~60mmF1.4 Auto iris + Manual focal lens> | High quality with high cost. $159.95 | ||||||||||||||||||||||||||||||||||||||||||||
Apart
from weatherproof cameras, most of the cameras are lenses replaceable. 1/3"
CCD will have a wider viewing angle(15°more) than 1/4" CCD.In general,
2.5mm~2.8mm is suitable for shooting distance that is less than 15 ft
CCD size and Lens focal length will affect the viewing angle. The following
table is a summary of viewing angle for different CCD and Lens.
To select a suitable lens please follow the following steps <A> Measure the distance between the camera and the shooting target. We call this the viewing distance--L <B> Measure the viewing width--W. Use the following trigonometric formula to find out the viewing angle. Viewing angle = 2 * Arc tan (W/2L)
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