To prevent a background from coming out darker than in the conventional manner in the case of electronic flash photographing in a wide room or the outdoors where illumination is little by setting the reference exposure in an electronic flash photographing state equal to or under a specified value.
When a diaphragm hole 21c is made to retreat from the rear of a photographing lens 1 by sliding a diaphragm plate 21 rightward, a diaphragm becomes a large-diameter fixed diaphragm hole 23a bored on a fixed diaphragm plate 23. Therefore, a cam 21b presses the movable contact piece 22a of a main switch 22, and the armature 22a press-contacts with a fixed contact piece 22b, so that the main switch 22 is turned on. Namely, it is the electronic flash photographing state in which a stroboscope emits light. The film unit is constituted to satisfy A≤10, desirably, 6≤A≤10 when it is assumed that the EV value of the reference exposure converted into the sensitivity of film of ISO 100 decided based on a diaphragm value and shutter speed in the electronic flash photographing state and the sensitivity of the loaded film is A.
SUZUKI YOSHIJIRO
KANEIWA KEI
FUJITA MASAMI
HARAGA HIDEAKI
ISHIDA MASARU
KITAHARA ATSUSHI
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