Picture Quality
Everybody wants the best quality they can get for the cheapest outlay right?
The gap in quality between the types of image sensors used in the different types of cameras has been narrowing as technology develops. In terms of vehicle rear view cameras, the best value for money is with the CMD cameras. These now have the better image quality than the old-version CMOS cameras and are much cheaper than CCD cameras (CMD is now very close in picture quality to CCD). The cameras made by VMS that we have selected to stock in the
ExplorOz Shop use CMD image sensors.
Another factor to look at is night vision. If night vision is important to you, you might like to specifically look for a camera that comes with infrared illuminators. Typically, the illuminators should provide a minimum of 3-6 metres of illumination, or you can get 6-9 metres with a higher-end infrared camera.
If you're considering a wireless system, consider the implications of video interferance if you wish to use the unit whilst driving forward as a rear-vision system.
Audio
Some reversing kits are now available with built-in audio intercoms, which allows the driver to more easily communicate with a spotter outside the vehicle. If you're building your own kit, you could add the audio into your system by installing a camera that includes a (waterproof) microphone.