如何挑相机（How to pick a camera）.docVIP

如何挑相机（How to pick a camera） Home card captain, coke machine selection, SLR selection I. main performance indicators of digital cameras: 1. digital camera pixels: In the process of using digital cameras, manufacturers often use CCD pixels as the specifications of digital cameras because the receiving sensor is a digital camera CCD. A digital camera that judges only how many pixels is needed can be determined by the formula. The formula is: the image quality, the image size, the square of the resolution. - If only for daily photography, is used to output the 6 inch photo photo gallery (150DPI), 6X 5X 150 X150 =70 million, 800 thousand visible pixel digital camera should be enough; if used for processing the length and width of each one times 12 inch photos (4 times larger) output is used 12X 10 X150 X150 =270 megapixel digital camera. 2. digital camera lens The zoom ratio of the digital camera lens is directly related to the grab level of the original camera. The larger the zoom of a digital camera, the clearer it is to distant objects, and vice versa. Therefore, the choice of zoom digital cameras, you can effectively absorb the distant scenery when you go out. Digital camera zoom is divided into optical zoom (physical zoom) and digital zoom. One of the real effects is the digital camera optical zoom, digital camera digital zoom is just to double the object in the viewfinder display large, the clarity of the object does not have any effect. Pay attention to differentiation. Digital camera lens caliber also needs attention. If the caliber of digital cameras, then even larger pixels, in the light of the dark situation, it can not shoot good results. 3. digital camera LCD viewfinder Digital camera LCD viewfinder is not what great things, mainly is the brightness is high enough, the pixel should be large enough, and the area is better, more popular now is 1.5 inches to 1.8 inches, as long as a little attention at the time of purchase can be. Two. Other performance indicat