Digital camera CCD area size importance

Q: why is introduced in many digital camera Nikon D7000 charger articles, in addition to the pixel much outside, still will CCD area size as an important index listed? Excuse me CCD area size on a digital camera performance what effect?

Answer: the CCD photographic unit "by many" form, they will pass lens light intensity of telecommunications, according to convert. Say simply: same, production process in resolution is the same situation, the area of the CCD camera Nikon EN-EL15 charger, the greater the single "light-sensitive unit" area is bigger also, its SNR and photographic ability also taller, and the quality of the image is better. Besides CCD imaging area is larger, can use lens diameter bigger, focal length can also more long, which reduced the demand for lens resolution. Actually this and ordinary camera 120 film general effect is better than the imaging of truth in the film 135 similar.

Just image sensor is concerned, the smaller chip area, manufacturing costs will be lower, while in the area is only 1/2.7 inch light-sensing surface area line up millions of pixels, already let the per pixel light-sensing surface area reduced to 3 microns ~ 5 microns. If want to in this chip area adds XiangSuShu will bring image SNR is reduced, and the equivalent of a decreased. Mode In 300 million pixels digital camera Nikon EN-EL19 charger just appeared, many more professional users or more appreciation has 1/2 inches big CCD Canon PowerShot Pro70 168 million pixels, including single image quality photosensitive unit area is larger is an important factor.

Of course because of widespread CCD production process require very high, and the yield of large CCD are not high, so causing production cost, also will result in high resolution adopted under the same area of the digital camera to cost a CCD, currently higher than similar products many ordinary civil digital camera nikon en-el3 charger CCD largest size is only 2/3 inches, and professional digital camera photoreceptor element size is reached with ordinary 135 film of the same level. Of course, as the average consumer will tell, focusing on the CCD area and not too big practical significance, and after all affect digital camera finally imaging quality factors and lots more.