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night cameras, as they are able to capture color images in both daytime and low-lux conditions. Generally speaking, low lux can reach 0.1 lux in color mode and 0.01 lux in black/white mode. IR illuminators providing near-IR light can be used in conjunction in 0 lux conditions, but these are generally not listed as part of the low-light, color-mode specifications. Most of these type of cameras utilize Ex-view-HAD technology, which are capable of performing in conditions of


up to 0.01to 0.001 lux. Such cameras are not only able to capture clear images, but are also able to limit noise levels in color images taken under low-lux conditions, without the need to reduce shutter speed or increase iris diameter. Hence, they are considered to be capable of achieving low-lux surveillance.

Most Convenient: Day/Night Mode Cameras featuring day/night modes use mechanical principals and are gradually

FEB 2014

becoming more common on the market. Most day/night cameras are labeled as colored 0.1 lux and IRC on black/white 0.01 to 0.001lux. It should be noted that since 0 lux does not really mean anything in this context, therefore, no special explanation of it is needed for low-light nighttime application. These cameras make use of near-IR light to deliver black and white images when light is reduced to a certain level — the camera switches to IR cut or to black/white mode after sensing the


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