If the screen is so far away from the eyepiece that the camera can be placed between . 如果投影屏距目镜很远,照相机可放在两者之间。
2.
Photography - projection in indoor rooms - classification of transmitting projection screens and measurement of their transmitted luminance levels 摄影.室内投影.透射投影屏的分类和其透射光亮度水平的测量