Abstract: A high-molecular-weight compound having at least one substituted triarylamine structural unit represented by the following general formula (1), further including a structural unit having at least one aromatic hydrocarbon ring or a structural unit having a triarylamine skeleton in addition to the at least one substituted triarylamine structural unit, and having a weight average molecular weight of 10,000 or more and 1,000,000 or less in terms of polystyrene and no a crosslinker, wherein the high-molecular-weight compound is used in an organic EL device as a constituent material of at least one organic layer. A polymer material having excellent hole injection/transport performance, electron blocking capability, high heat resistance, and high stability in a thin-film state for use in a polymer organic EL device, and an organic EL device having a low drive voltage, high light emission efficiency, and a long lifetime using this polymer material.

Abstract: An image capturing apparatus communicates with a strobe device used for image capturing and acquires preliminary light emission result information performed by the strobe device. A light control process for determining a light amount of main emission by the strobe device for main image capturing is executed based on the acquired preliminary light emission result information. In a case where an image capturing frequency for repeating image capturing is higher than a threshold value, information which is different from information on the light amount of main emission and is used for settings of preliminary light emission or main light emission is communicated by dividing the information into information acquired by a first communication processing before preliminary light emission and information communicated by a second communication processing after preliminary light emission.

Abstract: An image capturing apparatus communicates with a strobe device used for image capturing and acquires preliminary light emission result information performed by the strobe device. A light control process for determining a light amount of main emission by the strobe device for main image capturing is executed based on the acquired preliminary light emission result information. In a case where an image capturing frequency for repeating image capturing is higher than a threshold value, information which is different from information on the light amount of main emission and is used for settings of preliminary light emission or main light emission is communicated by dividing the information into information acquired by a first communication processing before preliminary light emission and information communicated by a second communication processing after preliminary light emission.

Abstract: An image capturing apparatus, comprises an instructing unit capable of issuing an instruction for an image capture preparation operation and an instruction for an image capture operation, a metering unit configured to meter brightness of a subject, a calculating unit configured to calculate values of exposure parameters based on a metering result, an acquiring unit configured to acquire information related to an image capture lens; and a controlling unit configured to, when image capture is performed with light emitted by a light emitter, control the calculating unit so as to make different a calculation method for the values of the exposure parameters at the time of issuance of the instruction for the image capture preparation operation based on the information related to the image capture lens.

Abstract: An image capturing apparatus, comprises an instructing unit capable of issuing an instruction for an image capture preparation operation and an instruction for an image capture operation, a metering unit configured to meter brightness of a subject, a calculating unit configured to calculate values of exposure parameters based on a metering result, an acquiring unit configured to acquire information related to an image capture lens; and a controlling unit configured to, when image capture is performed with light emitted by a light emitter, control the calculating unit so as to make different a calculation method for the values of the exposure parameters at the time of issuance of the instruction for the image capture preparation operation based on the information related to the image capture lens.