CCTV technology glossary
CAMERA TECHNOLOGY MUST BE UNDERSTOOD
TO PREDICT CAMERA QUALITY!
Camera technology is constantly changing and if you don’t understand the technology used in your camera then you won’t know what you’re getting until its too late! Many cameras use the same body, but house very different technology. The old adage was never truer; “you can’t judge a book by its cover”. Here is a list of technology based terms to help you better understand what you’re paying for.
Wide Dynamic Range:
(WDR) This function is intended to provide clear images even under back light circumstances where intensity of illumination can vary excessively, namely when there are both very bright and very dark areas simultaneously in the field of view of the camera. WDR enables the capture and display of both bright and dark areas in the same frame, in a way that there are details in both areas, i.e. bright areas are not saturated, and dark areas are not too dark.
ATR : Adaptive Tone Reproduction:
ATR improves the visibility of the entire picture by providing the optimum gradation compensation. It is a digital version of the Wide Dynamic Range feature, and therefore less expensive.
2D DIGITAL NOISE REDUCTION
2D DNR – Improved S/N ratio 50dB and more sharp and noiseless low light image quality provided by built-in noise reduction (2DDNR: 2D Digital Noise Reduction) function.
HLC : High light Compensation
suppresses strong light sources (such as the headlights of automobiles, flashlights, etc…) in dark places and prevents camera from being blinded. Not needed on cameras with Wide Dynamic Range because that feature is built into the WDR.
Effio – Enhanced Features and Fine Image Processor.
It is a high quality Sony signal processor and realizes high resolution of over 650TVL, high signal to noise ratio, and high color reproduction. This provides clearer pictures with higher sensitivity compared to conventional CCTV cameras.
The Effio line in the order of release is as follows: