电子快门照相机具有在焦平面上使底片的曝光量控制在最佳的范围之内的性能,使没有摄影经验的人也能拍摄出好的照片,同时,由于它所用的底片曝光量均一,因而便于冲洗和印放,并为冲洗和印放的自动化创造了条件。所以,电子快门照相机很受摄影者,特别是业余摄影者的欢迎。在外国已较为普遍使用电子快门照相机了,而在我国电子快门照相机是在1975年间世的。近几年来,电子快门照相机的性能在不断提高,机能趋于更加完善,例如:可靠性、曝光控制精度、测光速度、曝光指数范围等都在不断提高,耗电率也降低到很小的数值,各种指示和警报也成为电子快门照相机中不可缺少的项目了。另外,有一些相机具有电子-机械切换机构,构成电子-机械通用照 Electronic shutter cameras have the ability to keep the exposure of the film within the optimum range on the focal plane so that even those who have no experience in photography can take good pictures and at the same time, Easy to wash and print, and to create the conditions for the automation of printing and printing. Therefore, electronic shutter cameras are very popular with photographers, especially amateur photographers. In foreign countries have been more common use of electronic shutter cameras, and in our electronic shutter cameras in the world in 1975. In recent years, the performance of electronic shutter cameras is constantly improving, the functions tend to be more perfect, for example: reliability, exposure control accuracy, metering speed, exposure index range are constantly improving, the power consumption rate is also reduced to very small Numerical values, various indications and alarms have also become an integral part of electronic shutter cameras. In addition, some cameras have electronic-mechanical switching mechanisms that make up an electronic-mechanical general purpose photo