| 摘要 |
<p>PURPOSE:To changeover quickly and surely priority modes by constituting a titled device in such a way that the priority mide to be set by either of a member for setting an aperture value or a member for setting a shutter speed is set automatically according to the movement of one of said members. CONSTITUTION:It is assumed here that a priority mode fixing switch SW1 is off, namely, a priority mode exists in an unfixed mode; and incase an aperture scale ring 1 and a shutter dial 2 are set, if, for example, only the aperture value is changed, and aperture priority mode is set by a means 8 for deciding priority mode and is stored in a memory means 6. The shutter speed value of an optimum exposure value corresponding to the freshly inputted aperture value is calculated by an arithmetic means 9 in accordance with the aperture priority mode and is stored in the means 6. When the switch SW1 is on prior to change of the aperture value, the exposure is calculated in accordance with the already set priority mode. The priority mode is thus quickly and surely change over.</p> |
