发明授权
US4473288A Photographic device with screen for controlling gradation of photographed image 失效
具有用于控制拍摄图像的灰度的屏幕的摄影装置

Photographic device with screen for controlling gradation of
photographed image
摘要:
In a photographic device, there are provided (a) a means for measuring luminous intensity distribution on an object and (b) a screen means for controlling gradation of an image to be formed on a photosensitive material in accordance with the luminous intensity distribution and/or maximum/minimum luminous intensity difference of the object measured by the means (a).
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