An imaging apparatus includes: an imaging element; an imaging controller; a signal output controller; and an imaging condition determination section as defined herein, the signal output controller divides the first imaging signal stored in the storage section into a plurality of groups and sequentially outputs the first imaging signal from the imaging element for each of the groups, and the imaging controller causes the sensor section to perform the temporary imaging by performing the temporary imaging control, during a period from when all the imaging signals belonging to at least one of the groups are output from the imaging element until all the imaging signals belonging to all the groups are output from the imaging element, and determines the exposure condition at the temporary imaging based on the imaging signal stored in the storage section through the imaging performed by the sensor section before the actual imaging.