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Full-spectrum photography / camera

Wednesday, July 6, 2011

Full-spectrum photography is an image with  full, broad spectrum of a film or camera sensor bandwidth. Its create an unique image result. Some people said false color.
Actually all digital camera contains an infrared hot mirror filter that blocks most of the infrared and a bit of the ultraviolet that would otherwise be detected by the sensor, narrowing the accepted range from about 400nm to 700nm.  This what actually human eyes can see.If you buy a camera, you always want to get an images  just like what you see, am i right?.  emm, some people like me,need more than that. 
Modified digital cameras like mine can detect some ultraviolet, all of the visible and much of the near infrared spectrum, as most digital imaging sensors are sensitive from about 350nm to 1000nm..Replacing a hot mirror or infrared blocking filter with an clear filter allows the camera to detect the wider spectrum light at greater sensitivity. Without the hot-mirror, the red, green and blue (or cyan, yellow and magenta) elements of the color filter array placed over the sensor elements pass varying amounts of ultraviolet (blue window) and infrared .
The result is an image with rich red color because sensor get more red color from infrared and a real red color, combine with other color filter, you will get some various color depend on the color of filter it self.this modification especially for people who get bored with green color of leaves. and wantto see the different image from a natural scene, no need a big digital processing from your computer. the nature provide all,  we just need to know how to reveal it.       


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