Sequential shooting controller

A sequential shooting controller, comprising:

• a high load drive mode that drives a device used in an image capturing operation under a relatively high load condition;
• a low load drive mode that drives said device under a relatively low load condition;
• a first power-voltage detector that, detects a voltage of an electric power source by connecting a load for monitoring the voltage of said electric power;
• and
• a second power-voltage detector that detects the voltage of said electric power source by monitoring the voltage applied to said device;
• said first power-voltage detector being actuated in the beginning or sequential shooting, which continuously carries out sequential image capturing operations, before a first image capturing operation starts;
• an image capturing operation under said high load drive mode being started when the voltage of said power source detected by said first power-voltage detector is higher than a first threshold value and an image capturing operation under said low load drive mode being started when the voltage of said power source detected by said first power-voltage detector is lower than said first threshold value;
• and
• said second power-voltage detector being driven during an image capturing operation under said high load drive mode is carried out and said second power-voltage detector being disabled while an image capturing operation under said low load drive mode is carried out.