"Sense Up Mode" means " Frame Accumulation". It is an image processing technology which allows user selectable digital slow shutter speeds.

In order to allow extra light into a camera thereby providing higher sensitivity in low light conditions. Also referred to as "sens-up","sensup", "sense-up", "DSS", and "digital slow shutter".

The main purpose of sense-up is to provide a camera technology that does not rely on artificial light to see in very low light conditions.
This means that cameras with sense up are capable of seeing in near total darkness while retaining full color images. Security cameras equipped with this technology use an adjustable electronic shutter to vary the amount of light that enters the camera.

If you've ever been asked to take a dilation test at the doctor's office you know that when we as humans encounter low light environments the iris of our eyes opens up in order to allow more light to be processed by our brains. You also know that when they dilate your pupils you will have a lot of trouble seeing in regular light for the next couple of hours. Sense-up cameras operate in a similar fashion when they see darkness. The shutter stays open longer, allowing more light into the camera and seeing better in low light. There is one big difference however, when your pupils are artificially dilated, they remain dilated for quite a while, sense up cameras or cameras with DSS will automatically adjust back to normal settings in regular lighting situations.

When the environment light is very week, the camera turns on sense up mode that has superimposed a few images together and increased brightness for more clear video, but if it is dynamic, there is obvious tailing phenomenon.  

Such camera, also known as (picture) cumulative camera, has adopted the computer memory technology that continuously accumulate a few fuzzy images due to lack of brightness, so as to get a clear video, which has adopted slow shutter technology to make camera's minimum illumination available to 0.008lux/f1.2(×128); meanwhile, the 128 frames of accumulation has become the leadership in the market already.

This type of low-light camera is the best safeguard for the museum, observation of biological activity at night, night surveillance and other military coastline and static places that are easily damaged and forbidden by infrared and UV.

However, Star-Light is used to describe the data of environment illumination, such as 0.01Lux and 0.001 Lux, etc. 

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