Patent ID: 8005354
Filing Date: 2011-08-23
Classification: G03B

Abstract:
1. An image pickup apparatus adapted for bi-directional communication with a plurality of light emission devices via a communication unit, comprising: a light measurement unit configured to measure object brightness; a first calculation unit configured to calculate first light emission amounts of the plurality of light emission devices based on a result of measurement by said light measurement unit; an acquisition unit configured to acquire data representing possible amounts of light emission of the plurality of light emission devices; a second calculation unit configured, in a case where the plurality of light emission devices include one whose possible amount of light emission represented by the data acquired by said acquisition unit is smaller than the first light emission amount, to calculate second light emission amounts at which light amount ratios of the plurality of light emission devices become equal to light amount ratios at the first light emission amounts, based on the possible amount of light emission smaller than the first light emission amount and having a maximum difference from the first light emission amount; and a control unit configured, in a case where the plurality of light emission devices include one whose possible amount of light emission is smaller than the first light emission amount, to control the plurality of light emission devices so as to emit light at the second light emission amounts.