| 摘要 |
PURPOSE:To adjust a quantity of light by an easy means for various photographing systems varied in required quantity of light by a method wherein an emission value of a stroboscope is adjusted according to the required quantity of light and a dimmer means such as filter, stop or the like is inserted automatically into an optical path between a light source and a photographing means to attenuate the quantity of light reaching the photographing means in a photographing with limited required quantity of light. CONSTITUTION:An inspecting person adjusts an emission value with an emission value adjusting circuit 20 of a stroboscope by combining the selection of photographing systems while a filter driver is controlled with a controller to make an adjustment so that quantities of light appropriate to various photographings are obtained. An ND filter 9 used in this example, is 15% in transmissivity and is inserted into an optical path in a color photographing of a still video and retreated from the optical path in other photographings. Therefore, in the color photographing of the still video, an eye to be inspected is lighted by a puantity of light 3% as much as that in a fluorescent photography. |
