测试ccd坏点（CCD test points）.docVIP

测试ccd坏点（CCD test points） Buy the new DC test CCD noise, Huaidian (detail) Found before you buy a machine is very concerned about how to test the noise pixels, this can be understood, because the dead / noise related to the imaging quality of a digital camera, night shooting ability even if repair. So I simply say that the noise test method about the purchase of new digital camera. Because the noise is less and buy SLR SLR buddies are master will not discuss the SLR, but in fact can be used as ordinary SLR full manual testing machine. The consumer class DC Im here is divided into manual, manual, manual, and manual controls. Theyre a little different from what they are tested. Lets introduce it step by step: 1. open the camera, preheat 1 2min, use this time to enter the menu, shut the date function (the default mapping new machine, open estimation is not new), shut the noise function (the default off), close the image effect (sharpness, contrast, sharpness, saturation to normal) shut, reversal effect, automatic white balance. Then cover the lens cover, no lens cap machine with flat cover, dark, thick book firmly of the camera lens cover. If possible, surrounded by a black cloth around the lens. Image format select JEPG fine (fine), this most commonly used. Some fully automatic machine shutter, slow to automatically open the noise reduction, the solution in second. 2. start testing now. Dont zoom. The first test the lowest under ISO light noise / bad situation. Other ISO testing methods are exactly the same. Full manual and partial manual, needless to say, you can manually change the ISO to the minimum. No manual cameras, and later methods. With the fastest shutter, the shutter (1/250s, 1/125s, 1/30s, 1/15s until 1s several files (their pick, covering a full point) and the slowest shutter number are all black, in order to test the CCD light noise / bad situation. Fully automatic machine can not be decided by the shutter, so take a night mode instead of the slow shutter