CCD, Cmos

Comparing the film with digital cameras these do not use a roll. That space is used for the electronic systems, ordered to transform the analogical signal of the CCD, in DS, codified in binary language combining zeros and ones(1111 and 0000) and storing them as data that is the reason why they occupy little space. The photosensitive material called “CCD” (Charge Coupled Divice) are semiconductors that acomódate a big quatity of receptor sor fotodiodos that are the sensible analogical elements sensible to the light.They are in charge to transform the light into electrical pulses that soon the systems processed digitally so color and brightness are store in magnetic support, hard disk or CD-ROM. Each fotodiodo is denominated Pixel and they are distributed in the surface of the CCD. In cameras of 3 CCD, each CCD collect a color (RGB), each CCD will have the same resolution, the final resolution is indicated as total pixels. The 3:4 format (proportions of screen) is 720 xs 480, pixels distributed in the CCD.The greater number is the horizontal resolution and the minor number the vertical resolution, so that multiplying both, we will obtain the total Maximum resolution of the CCD. In the first case, 345.600 px, (0.35 mega pixels). The quality of image that provides a camera directly is related to the amount of pixels able to be reproduced in screen or impression. Digital camera, cinematographic style, of 6 mega resolution pixels, is offered by Arri HD-D20.The one that counts just by a CMOS (Semiconducting of Complementary Metal-oxide) of the size of Super cinematographic format of 35 mm. In the way of video signal, the output resolution is of 2,1 Mpxs. (1920 xs 1080 pixels). Like other photosensitive censors, Each pixel is a diode that turns the light on electrical charge, under the principle of the photoelectric cell, discovered by Einstein.