PURPOSE: To provide a system which is a finder optical system, displays information on a surface suitable for viewing through an eyepiece without placing an optical element and is hardly affected by the dust and soiling of the optical element and simultaneously, the arrangement of the optical system under less restrictions in the arrangement of the optical element.

CONSTITUTION: A hologram information display element 5 is arranged in the image forming surface of an objective lens 1 as a position suitable for viewing through the finder optical system or the position away from the conjugate surface of the image forming surface, a hologram is illuminated from the outside of the optical path of the optical system to reproduce the image of the displayed information, so that a member for displaying finder information is not disposed on the image forming surface or its conjugate surface, but a finder information display suitable for the diopter can be executed.