The viewfinder cap is used to avoid incorrect exposure due to stray light which may enter the metering system is not adversely affected.
取景器盖能防止由于离散光进入取景器目镜而引起不正确的曝光。它能保证测光系统完全不受影响。 收藏。
2
The safe function of the mine caplight being applied currently in our country is analyzed, in order to provide the reference for the right application and management of the mine caplight.