| 摘要 |
<p>PURPOSE:To eliminate such a defect that the display position of an diaphragm value shift according to photographic mode by displaying an diaphragm scale and a calculated diaphragm value at the same position in a viewfinder visual field. CONSTITUTION:Display information light M which indicates the diaphragm value set through the operation of a diaphragm ring is reflected sidewise near the front-side upper slanting surface 11d of a pentagonal roof prism 11 by a mirror 22 arranged nearly in the right-left center. Then, the rays of light are reflected upward by a mirror 21, transmitted through a concave lens 19, and then reflected by a mirror 20 toward the pentagonal roof prism 11 to be made incident from the front-side upper slanting surface 11d of the prism 11 through a half-mirror 18. Those rays of light travel to below s projection surface 11e at the same angle with the rays of light from part of information light L which arrive from a part corresponding to 60a and are projected from an ocular 13 through the same path. Consequently, a liquid-crystal display device 60 displays set values and calculated values of a shutter time 60b and the diaphragm value 60a.</p> |
