数码入门基础（Fundamentals of digital access）.docVIP

数码入门基础（Fundamentals of digital access） Basic introduction: 1, the basic terminology of digital cameras - SLR digital cameras SLR digital cameras refer to single lens reflex digital cameras, namely Digital digital, Single alone, Lens lens, Reflex Reflective English abbreviation, DSLR. At present the common digital SLR Camera Brand: Nikon, Canon, Pentax, Fuji etc.. Working principle： In the system of digital SLR cameras, light through the lens reach the mirror, reflected in the above on the screen and the images formed through the eyepiece and the five prism, we can see the scene outside the viewing window. By contrast, the average digital camera can only see images taken through the LCD screen or the electronic viewfinder (EVF). Obviously, the direct image is better than the image you see. The shooting in DSLR, when you press the shutter button, the mirror will go up, the photosensitive element (CCD or CMOS) in front of the shutter curtain will open at the same time, it is projected to the original photosensitive photosensitive light through the lens, and then after the mirror immediately restore the viewing window in the image can be seen again. The structure of single lens reflex camera, it is completely determined through the lens focus shooting, it can see the image in the viewing window and the film is always the same, its shooting range and the actual shooting range is basically consistent, very conducive to visual framing. Main features: One of the big features of SLR cameras is that they can exchange lenses of different sizes, which are the natural advantages of SLR cameras, which are unmatched by ordinary digital cameras. In addition, high-end products are digital SLR camera positioning in the digital camera, the digital camera photography in the photosensitive element relationship quality (CCD or CMOS) area, the area is far greater than the ordinary digital SLR digital camera, which makes the sensitive area of each pixel point of the digital SLR camera is f