Q&A:

Question from customer: will the night vision cameras work during the day, what kind of quality picture can I get, how will the night vision work when a car comes up behind me with its headlights on.

 Answer: The lens comes with a light sensor.  During daylight or cloudy weather, when everything can still be seen with naked eyes, the camera will stay on daylight mode such that it will work similar to any other camera without additional artificial light source. During night time ??? or when inside very dark garage, the light sensor will detect the low ambient light and will automatically turn on the infra red diodes; the camera will then display what normal eyes cannot see under such condition without additional light source.  In other words, regardless of the light condition, you will see things as if it is daytime regardless of day or night or low light or cloudy conditions (remember, at night, the object must be within the distance we stated in the table of picture 1 above).

Question from customer: Your competitor sells similar camera with 2.8mm lens and stated that their camera viewing angle is 120 degree.  How come your 2.8mm camera has a much lower viewing angle? 

 Answer: This is one of those misinformation which our competitor never truly discloses to their customer.  Here is the fact.

Viewing angle can refer to either of these angles shown in the diagram below.

1. Side to Side Viewing Angle (Let's call it SS Angle)	2. Corner to Corner Viewing Angle (Let's call it CC Angle)

For 2.8mm lens,

if it is PAL format, the CC angle is approximately 120 degree, but the SS angle is approximately 110 degree.  If you want to buy this PAL camera, simply click on this icon: .  If you don't have a multi system monitor (capable of displaying both PAL and NTSC), then buy from us by clicking on this icon:

if it is NTSC format, the CC angle is approximately 105 degree, but the SS angle is approximately 95 degree.  If you want to buy this NTSC camera, simply click on this icon:

So the next time when a seller tells you that their 2.8mm camera can achieve a viewing angle of 120 degree, make sure you know what he is talking about.

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