FAQ

How do I choose the correct camera for my application?
This in general is a comparatively difficult decision. Many aspects of the installation must be taken into consideration in order to obtain the correct performance that meets your requirements.
A high resolution camera should be considered where greater detail of scene is required. Choosing a more sensitive camera will improve reproduction in poorly lit areas. The sensitivity of a camera is indicated by the minimum amount of light in order for the camera to produce a usable picture.

How do I set up a camera and lens for use in Low Light conditions and or with Infra Red Lighting?
When setting the back focus of a Colour camera for low light conditions you should place an ND1 (Neutral Density) filter in front of the lens. When setting the back focus of a Mono camera for low light conditions you should place an ND3 (Neutral Density) filter in front of the lens. When setting the back focus of a Mono camera fitted with I/R lighting for low light conditions you should place an IRP (Infra- Red Pass) filter in front of the lens


Can I use any type of CCTV security camera outside?
Not really. Some bullet cameras, Vandal proof Dome camera and most Infrared cameras are designed for outside use with waterproof cases, but if you need lenses of different focal lengths and especially if you need auto-iris lenses (which are best for outside because of varying light conditions) then mini-cams won't be satisfactory. Normally, box cameras are used outside but need to be mounted inside a special outside housing. These housings are rainproof and can also contain a heater unit for really cold climates and/or a fan for hot climates. Mini-dome CCTV security cameras, most Dome camera and some hidden camera meant for inside use only, should not be used outside.


If I purchase fixed focal length lens or security cameras with fixed lens, can I exchange those if I don't like the field of view that I see? .
Yes you can, provided they are shipped back in the original packaging and are in "as new" condition. However, you will be liable for the shipping charges, both ways and this, combined with the hassle involved, usually makes it an unsatisfactory thing to do. Better, in the first instance, if you are unsure about the lens focal length required, to purchase cameras with vari-focal lenses. These are manually adjustable over a range of focal lengths, most commonly from 3.5 to 10.5mm, to give a wide range of field of view.