PURPOSE: To excellently perform magnetic recording even when a device for high-speed feeding is mounted and film is fed at high speed.

CONSTITUTION: By providing a power source switching means 25 which switches a power source for driving magnetic recording means 12 and H from a power source battery on a camera side to a power source battery on the device for high-speed feeding B when the device for high-speed feeding B is mounted and the high-speed feeding of the film is set, the power source battery of the device for high-speed feeding having high voltage is selected as a power source for write in the case that the feeding speed of the film is high, so that the rise time of a write current becomes steep.