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Why vegetation in infrared/ full spectrum camera always looks good?

Thursday, January 10, 2013

why if we use a full spectrum or infrared camera, its always need a vegetation to make a good capture, the reason is, the vegetation is looks different in modified camera compared to vegetation in natural condition, its unique. but why its unique?here is the explanation

Vegetation use visible light  as part of their photosynthesis process to make their foods. The most need are  mainly blue and red light but not so much green light, so they reflect green light a lot, thats why vegetation mostly looks green to our eyes. actually there one light which is reflected from vegetation, the  near infrared light, but not visible to the human eye thats why we can only see green leaves.  the near infrared light which is just beyond red light, are able to capture by CMOS and CCD from camera or by special negative film on past time photography.

Is it a benefit for CMOS and CCD to be able to capture near infrared ?, of course for most people it a disturbing effect. To make image captured by camera looks exactly like our eyes, Camera manufacturer must put a hot mirror ( it just name, some said its uv ir block filter ). actually the camera have capabilty to see beyond that.

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