The data of each pixel of a CCD, acquired from double pre-emissions performed in accordance with a shutter operation, is estimated to determine appropriate luminous energy for actual photography. The at least one petal being capable of opening outwardly after the shot cup leaves the shotshell. The control unit switches between a first control mode which is allowed to perform predetermined post-processing on the sheet received from an image forming apparatus and a second control mode which is allowed to perform predetermined post-processing on the sheet received not via the image forming apparatus. The container holderholder is formed by deforming the outer wall. A doped region of a second conductivity type is formed in the epitaxial layer and surrounds sidewalls of the trench, wherein the barrier region prevents a dopant used for forming the doped region from reaching the epitaxial layer under the barrier region.