To reduce the occurrence of an under exposed photograph and the occurrence of an out-of-focus photograph by providing an exposure switching operating member and a focal point position switching operating member.

Exposure become large in the case the exposure switching operating member 5 moves in a right direction. The focal point position of a photographing lens 1 can be switched on a close distance side in the case the focal point position switching operating member 6 moves in the right direction. For example, when photographing is performed on a cloudy day, or on such a position having a condition that object luminance is low as a position under eaves, the member 5 moves in the right direction. Since a driving lever 10 moves in the right direction linked with the operation of the member 5, a diaphragm diameter in the case of photographing is switched to a first diaphragm hole 7 from a second diaphragm hole 9. Consequently, since the exposure becomes large, the possibility of underexposure becomes low even though a low luminance object is photographed. The member 6 reduces the possibility of the occurrence of the out-of-focus photograph.