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Megapixel Cameras and Surveillance Software User Manual
CBC (America) Proprietary Information p.8
Optics
MP2, MP3DN, and MP5 should be used with a 1/2” or 2/3” optical format lenses. MP3DN requires two
manual iris lenses and has a limitation on lens diameter (<38mm).
Manual Lenses
A wide variety of C/CS mount lenses with megapixel resolution may be used with CBC cameras. Note that
all C-mount lenses require a 5mm adaptor ring. Some lenses may also require 0.4mm-0.8mm adjustment
spacers. CBC (America) lens suggestions include:
Computar M0514-MP (5mm), M0814-MP (8mm), M1214-MP (12mm), M1614-MP
(16mm), M2514-MP (25mm), M5018-MP (50mm).
Using Manual Iris Lenses
Choosing the lens correctly is very important for mega-pixel cameras. Poorly selected lenses may cause
the image to appear blurry when the lens iris is fully open or closed too much. To deliver sharp mega-pixel
resolution images you should:
• Use mega-pixel-resolution lenses.
• Obtain best resolution and depth of focus by having the iris slightly closed.
When setting up the camera, direct the camera at the scene and try closing the iris by several F-stops. At
some point the image will look it’s sharpest. Leave the iris closed at this value.
Auto-Iris Lenses
Standard DC auto-iris lenses could be used with MP2 cameras equipped with the auto-iris feature. CBC
(America) recommends the following high-resolution optics:
Computar HG2Z0414FC-MP 4mm-8mm
Using Auto-Iris Lenses
MP2 is available with DC auto-iris option. To use the DC auto-iris lens:
1) Attach the lens to the CBC camera.
2) Plug in the lens cable into the connector on the back of the camera. Make sure that the lens cable is
long enough. Many DC lenses are available with short and long cable options.
The camera will automatically detect the presence of an auto-iris DC lens and start using it. Auto-iris lens
operation typically proceeds as follows:
If illumination is sufficient, the camera will close the iris within half-a-minute.
When the iris is closed, the image should become visibly sharper. As the iris is gradually closed
the image brightness may fluctuate slightly.
Monitoring Iris Status with CBC Video System
You can monitor the state of the iris in CBC Video System “Settings” dialog. See “Operating CBC Video
System” for details.
Accessing CBC Cameras
Cameras can be accessed and controlled by means of
• CBC Video System software