| 摘要 |
PURPOSE:To obtain an excellent picture quality even in case of executing developing by diaphragming a 2nd iris different from an aperture iris by quantity corresponding to a trimming range at the time of trimming photographing. CONSTITUTION:A 1st iris 3 decides an exposure value and specifies a light beam. And the 2nd irises 1 and 2 and a film 4 arranged on an image formation surface are provided. Moreover, they are arranged outside an effective luminous flux in a usual photographing with the maximum aperture when the dimension of a screen is maximum. And by diaphragming the 2nd irises 1 and 2 different from the aperture iris 1 by quantity corresponding to the trimming range at the time of trimming photographing, the excellent picture quality can be obtained even in case of executing the developing.
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