Low Iight Camera which can work in weak light condition is a kind of Hidden and (or) Security Camera, involving Moon type, Star type and IR type.
Such high sensitivity cameras as Moon grade and Star grade can normally work in tiny light condition and 1~3 Lux is the general illumination (the "Illumination" is measured by "foot candles." According to Engineering Tool Box: "A foot candle is actually one lumen of light density per square foot, one lux is one lumen per square meter." Engineering Tool Box also states that the recommended indoor illumination level is 500 to 1,000 lux).
Moon type: normal work needs around 0.1 lux illumination.
Star type: normal work needs below 0.01 lux illumination.
IR type: IR light source, even can image Black/White picture in 0 lux condition.
Source: http://outdoz.com/what-is-a-low-illumination-camera-ezp-36.html?chapter=3
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A low light camera is designed to create optimum images with a camera in dim settings. In other words, the better quality the camera, the darker the setting that can still create high quality photos.
Lots of camera enthusiasts in forums online will agree that the Canon SD850/950 IS is the best camera to use in a low-ISO environment.
The Clover CW3510 camera has a reasonably wide range, and has a moderately good reception, but works best in low-light.
Because there is low light.
aperture is the amount of light which enters the camera. lower number the bigger hole ad the bigger hole is good for low light.
Currently, the A7s from Sony has the best low-light quality.
Best has many dimensions. Best resolution? Best Value? Best in capturing motion? Low light? etc. Sony R1 could be considered "best value" as far as image quality and lens quality is concerned in a package.
Getting a Nikon 124res Camera flash will give you great light in very dark settings.
You can purchase a digital camera from Best Buy for as low as $22.99. As their sales vary by week, check their sales flyer or in store to find the best price each week.
The Olympus SP700 is a DSLR camera with a 12 megapixel sensor. It can take beautiful photos in low light, and has a small amount of built in memory (also accepts SD cards).
Pentaprism is a type of viewfinder in camera, it is consider to be the best one as it present the most natural quality and color of the subject to be captured by the camera, it directs light to the viewfinder through camera sensor !!