Video Tech Support
______________________________
Essential Tools for CCTV (Security Surveillance Video)
Camera Back-Focus Filter / Neutral Density Filter
In the past some have used welder’s glass, or focusing the cameras at night! Here is the right tool for the job.
Use & Operation
1.
Used primarily to make a proper back focus
adjustment when installing motorized zoom/ auto-iris lenses.
2.
To assure that a zoom lens stays in focus through the entire
aperture range,
the camera must be back-focus when the lens iris is wide open. The CBF1 filter
is placed in front of the lens to keep the auto-iris open during adjustment.
This unit is an essential tool for the professional installer!
(CBC America / Computar / Ganz, Model #CBF-1 – Camera Back Focus Filter)
Back Focus Instructions
Indoor Fixed Lens Models:
1. With the camera operating, view an object at least 75 feet away.
2. Set the lens focus ring to infinity by rotating it fully clockwise as viewed from the front of the camera
3. Set the lens iris to its widest useable opening.*
4. Adjust the imager (chip or tube) to bring the object being viewed in to the sharpest focus.
Outdoor Fixed Lens Models:
1. Point the camera at an object, which is more than 200 feet away.
2. Set the lens focus ring to infinity by rotating it fully clockwise as viewed from the front of the camera.
3. Place the CBF-1 Neutral Density filter in front of the lens to insure the iris is in full open position.*
4. Adjust the imager (ship or tube) to bring the object being viewed into the sharpest focus (filter must be in place during this step).
Zoom Lens Models:
1. With the camera operating, view an object at least 75 feet away.
2. Make sure the lens iris is wide open using the CBF-1 Neutral Density filter.
3. Set the lens focus ring to infinity by rotating it fully clockwise as viewed from the front of the camera.
4. Adjust the lens zoom to extreme wide angle.
5. Adjust the imager (chip or tube) to bring the object being viewed into the sharpest focus (filter must be in place during this step).
6. Move lens zoom to extreme telephoto.
7. Adjust lens focus (by the controller) for best picture.
* The lens aperture must be wide open for all back focus adjustment procedures. This can be done in subdued lighting or with filters.
View
Finder / Lens Selector
No Tape/Wheel Measurements, No guessing, No site revisits because you forgot.
CBC America / Computar / Ganz Model # VM300
A valuable tool for both the seasoned professional and
first-time security video designer.
The viewfinder is an optical tool to help determine the required focal length. First look through the eyepiece and zoom in to the desired image. Then read the required focal length on the lens barrel. Covers 2/3", 1/2", 1/3", and the new 1/4" formats. A protective case and neck strap are included.
View Finder / Lens Selector
Portable Service Monitor for Video Technicians
CBC America / Computar / Ganz Model # PSM-02
2.5" TFT LCD Hi-Resolution, Color Display, Portable Service Monitor
Service Monitors pay for themselves by making service call efficiently (One person instead of two).