Flash device, imaging apparatus, camera system, and control method for flash device

摘要

A flash device (300) connectable to an imaging apparatus (100) includes a light emission unit (307) arranged for continuous light emission, a calculation unit (310) configured to calculate a reach distance of flash light from the light emission unit based on an exposure time for flash photographing set in the imaging apparatus, and a display control unit (310) configured to cause information indicating the reach distance calculated by the calculation unit to be displayed.