佳能EF是上世纪70年代初期生产的纵走式电子钢片快门单反相机,它机身紧凑,性能可靠。一位朋友近期在古玩市场淘得一台功能正常的黑机身佳能EF,甚是喜欢。但该机毕竟30余年了,在五棱镜与聚焦屏之间有很多灰尘,导致取景屏发暗且有很多黑色斑点,令人心情不爽。应朋友之邀,我对这台 Canon EF is the early 1970s produced vertical-type electronic shutter SLR film, it compact body, reliable performance. Recently a friend in the antiques market Amoy get a normal function of the black body Canon EF, is like it. But after all, the aircraft more than 30 years, there is a lot of dust between the pentaprism and the focusing screen, resulting in the screen is dark and a lot of black spots, people feel unhappy. At the invitation of my friend, I am this one