De Verschil Tussen Infrarood en Nacht Zicht
De zichte licht dat kan gezien gezien door het mens oog is gerangschikt volgens aan de golflengte van lang naar kort, in volgorde van rood, oranje, geel, groen, cyaan, blauw, en paars. De golflengte bereik van rood licht is {{0}}}}.{}}.}.76 μm; de golflengte bereik van paars licht is 0.38-0.46 μm. Licht met a korter golflengte than violet licht is geroepen ultraviolet licht, en licht met a langer golflengte than rood licht is het genaamd infrarood licht, which cannot seen seen with the naked eye. Because digital cameras use CCD's to sense all light (visible light, infrared light, ultraviolet light, etc.) , dit oorzaken de vastgelegde beeld aan zijn zeer anders van de beeld geproduceerd door onze naakte ogen alleen zien zicht licht. In orde om oplossen dit probleem, an infrarood filter is geïnstalleerd tussen de lens en de CCD in de digitale camera. De beelden seen zijn consistent.
Infrarood nacht zicht, dat is, in de nacht visie toestand, de digitale camera zal uitzending infrarood licht dat is onzichtbaar aan de naakt oog aan verlichten het object zijn gefotografeerd, uit de infrarood filter, en geen langer blok de infrarood stralen van entering de CCD. Na de infrarode stralen zijn gereflecteerd door het object Invoeren de lens voor beeldvorming, wat we zien op dit tijd is het beeld gevormd door de reflectie van infrared stralen, not het beeld gevormd door de reflectie van zicht licht, that is, at this time, we can capture images that cannot seen door the naked eye in a dark environment.
JVC's approach to "night vision" uses a color digital night eye feature. This function is similar to Panasonic's color night vision function. Since it uses a slow shutter speed, it is best to use a statod when shooting. It is difficult to obtain a good picture with a hand-held method. It is more suitable for shooting color pictures that do not move. As with the Panasonic's Color Night Sight feature% 2c wanneer fotograferen bewegen onderwerpen, beelden neigend naar uitstrijken en verschijnen schokkerig.
It is worth mentioning that in order to meet the needs of the market, in addition to its traditional infrared night shooting and super infrared night shooting functions, Sony has also newly developed a color slow shutter function, which is compatible with Panasonic color night vision and JVC color digital cameras. The function of night eye is similar, it is suitable for shooting non-moving color images, this function is only used in the state of video recording, and cannot be used for shooting still images. Although the image has become in color, there are problems of smearing and intermittent picture.
The "night vision" method adopted by Panasonic digital video cameras is: "color night vision". The color night vision function uses the brightness of 1LUX (when the shutter speed is controlled at 1/2 second) to brighten the subject to be photographed. The color night vision camera does not emit infrared rays like the infrared night camera models. It does not emit any light, but uses the method of prolonging the exposure time of the CCD, so that the charge generated by the light on the CCD is gradually accumulated incrementally. The circuit of the digital camera performs high-gain operation to complete the "night vision" function. Its characteristic is that there should be at least 1LUX of light (about the brightness of a candle) at the shooting location. Because it is not infrared shooting, the pictures it takes are in color, which is better than Sony's digital cameras. Color images are better than Looks nice in black and white. However, due to the extended exposure time of the CCD, the captured pictures are not continuous, and there will be a phenomenon of picture smearing
