如何挑相机(国外英文资料).docVIP

如何挑相机(国外英文资料) The home card machine has a long focus machine One of the main performance indicators for digital cameras: Digital camera pixels: In the process of using a digital camera, because accept the signal of the sensor is CCD digital camera, so manufacturers often use of the specifications of the CCD pixel as a digital camera. A digital camera that judges only how many pixels is required can be determined by the formula: image quality image size by resolution squared. -- If only commonly used for everyday take photos, is used to print the output of the hall 6 inch photos (150 dpi), 6 x 5 x 150 X150 = 700000, 800000 pixel digital camera should be visible enough; If the output of a 12-inch photo of the width of the width of the width of the width of the width is four times the size of a large scale, 12X 10x150 X150 = 2.7 megapixel digital camera is needed. A digital camera lens The zoom multiple of a digital camera lens directly relates to a digital cameras grasp of the original object. The larger the zoom, the more clear the object is in the distance, and vice versa. Therefore, choose a zoom digital camera that will allow you to get a good view from the distance when you go out. Digital camera zoom is divided into optical zoom (physical zoom) and digital zoom. The real work is digital camera optical zoom, digital cameras, digital zoom is The Times the object in the viewfinder display is big, has no effect on the degree of clear object. Pay attention to the distinction. Digital camera lenses also need to be noticed. If you have a small digital camera, you will not be able to make good results with a larger pixel and a darker light. A digital cameras LCD viewfinder No advanced digital camera LCD viewfinder, mainly is the intensity should be high enough, the pixels to is enough big, and area is the bigger the better, now more popular is 1.5 inches to 1.8 inches, just pay attention when the choose and buy. Other performance indicators for digital cameras: The abov