ADAPTER FOR CLOSEUP PHOTOGRAPHING

摘要

PROBLEM TO BE SOLVED: To provide an adapter for a closeup photographing with a dimmer plate where the unevenness of light distribution is small. SOLUTION: The closeup photographing adapter 11 is attached to the front of a film unit incorporating a lens 10. An auxiliary lens 31 changes the focus set position of the photographic lens of the unit 10 to a short distance side. The dimming plate 46 is arranged on the front of an electronic flash light part and dims the electronic flash light. The plate 46 is constituted by forming through-holes 48 consisting of many holes on a light shielding plate 47. The many holes consist of several kinds of holes whose apertures are different. The through-holes 48 are arranged to be asymmetric up and down and right and left with a horizontal axis and a vertical axis passing through the center of the light shielding plate 47 as reference in their array pattern. When the regularity of the array pattern is eliminated, the regularity of the unevenness of light distribution is also removed and the unevenness of light distribution is reduced. COPYRIGHT: (C)2004,JPO&NCIPI