To perform proper photometry in pre-emission of a light-emitting device for executing a light emission start instruction to another light-emitting device and of the another light-emitting device even when the light-emitting device for executing a light emission start instruction performs pre-emission by flash light emission.
A first light-emitting device incorporated or detachably disposed in an imaging apparatus controls a light-emitting part according to an instruction for pre-emission from the imaging apparatus, and performs flash light emission for causing a second light-emitting device to start pre-emission. The first light-emitting device further controls the light-emitting part to perform flash light emission for a side groove by the imaging apparatus after a prescribed time from the flash light emission. The second light-emitting device performs flat light emission for photometry by the imaging apparatus according to the flash light emission for starting the pre-emission.
| JP2010145972A | 2010-07-01 | |||
| JP2002169205A | 2002-06-14 |
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Next Patent: OPTICAL ELEMENT HAVING ANTIREFLECTION FILM, OPTICAL SYSTEM AND OPTICAL EQUIPMENT