发明授权
US4060817A Photographic apparatus with lens focusing scale 失效
具有镜头聚焦尺的摄影设备

Photographic apparatus with lens focusing scale
摘要:
Photographic apparatus including an indicating device bearing indicia for relating to the operator a distance at which a variable focusing lens assembly of the apparatus is focused. The indicating device is coupled to a focusing control system of the apparatus for movement therewith as the lens assembly is moved between distant and nearmost foci to bring the camera into coincidence with a predetermined estimation of a camera-to-subject distance for a photographic scene.In a preferred embodiment, an image of the indicia is presented in or beneath a field of view of a viewfinder mounted upon the apparatus and serves as a reminder to the operator of the distance at which the lens assembly is focused whereby an error in the focused position of the lens assembly is made obvious to the operator and a proper correction can be made before the shutter of the apparatus is released.
公开/授权文献
信息查询
0/0