Abstract: The present disclosure relates to an imaging device, a control method, and a program that make it possible to cope with various cases in which a plurality of communication standards is assumed to be mixed. A communication unit performs communication according to a first communication standard and a second communication standard. A communication compatibility processing unit performs communication compatibility processing necessary for maintaining communication compatibility in a case where an imaging system is assumed, the imaging system mixedly including a first external flash supporting only the first communication standard and a second external flash supporting both the first communication standard and the second communication standard. The present technology can be applied to, for example, an imaging system including an imaging device and an external flash.

Abstract: The present disclosure relates to an imaging system, a control method, and a program that make it possible to implement setting for an external flash by an operation on a camera side. Setting coordination processing is executed in which: setting information of an external flash (13) is transmitted and received between a first communication unit (67A) and a second communication unit (47); a second display unit is caused to display a setting screen to be used for setting a setting item of the external flash; and the setting information changed by an operation on the second operation unit is caused to be transmitted from the imaging device (12) to the external flash (13) via the first communication unit (67A) and the second communication unit (47), and a setting for the external flash (13) is caused to be applied. The present technology can be applied to, for example, an imaging system (11) including an external flash (13) and an imaging device (12).

Abstract: With a pre-light emission quantity adjusted to an appropriate value, the accuracy of light control for main light emission can be enhanced. A first pre-light emission quantity is obtained with no use of distance information. An appropriate light emission quantity is obtained with use of distance information, and a second pre-light emission quantity is obtained by decreasing the appropriate light emission quantity by a predetermined quantity according to a photometric wave detection capacity. A final pre-light emission quantity is obtained by mixing the first pre-light emission quantity and the second pre-light emission quantity, at a ratio corresponding to the accuracy of the distance information used to obtain the appropriate light emission quantity.

Abstract: To increase the accuracy of adjusting the main light emission. An amount of main light emission is adjusted on the basis of an estimated pre-light-emitted subject distance or information corresponding to the estimated pre-light-emitted subject distance and an estimated lens-focused subject distance. The estimated pre-light-emitted subject distance and the information corresponding to the estimated pre-light-emitted subject distance are obtained by pre-light-emission processing. The estimated lens-focused subject distance is obtained from focus information through a lens. In a case of bounce light emission, in a case where the estimated pre-light-emitted subject distance is smaller than the estimated lens-focused subject distance, a distance made closer to the estimated lens-focused subject distance from the estimated pre-light-emitted subject distance by a predetermined amount is set as an estimated subject distance for adjusting the main light emission.

Abstract: With a pre-light emission quantity adjusted to an appropriate value, the accuracy of light control for main light emission can be enhanced. A first pre-light emission quantity is obtained with no use of distance information. An appropriate light emission quantity is obtained with use of distance information, and a second pre-light emission quantity is obtained by decreasing the appropriate light emission quantity by a predetermined quantity according to a photometric wave detection capacity. A final pre-light emission quantity is obtained by mixing the first pre-light emission quantity and the second pre-light emission quantity, at a ratio corresponding to the accuracy of the distance information used to obtain the appropriate light emission quantity.

Abstract: A subject region discrimination unit 11 discriminates a desired subject region on the basis of ranging information. A subject photometric region setting unit 12 performs image signal processing of the desired subject region that is discriminated by the subject region discrimination unit 11, and sets a photometric region corresponding to the subject region after the processing as a subject photometric region. A photometric value calculation unit 13 calculates a photometric value of the desired subject region by using a photometric value of the subject photometric region that is set by the subject photometric region setting unit 12. For this reason, it is possible to accurately acquire the photometric value with respect to the desired subject region, and it is possible to perform optimal exposure control with respect to the desired subject region by using the photometric value that is calculated by the photometric value calculation unit.

Abstract: To increase the accuracy of adjusting the main light emission. An amount of main light emission is adjusted on the basis of an estimated pre-light-emitted subject distance or information corresponding to the estimated pre-light-emitted subject distance and an estimated lens-focused subject distance. The estimated pre-light-emitted subject distance and the information corresponding to the estimated pre-light-emitted subject distance are obtained by pre-light-emission processing. The estimated lens-focused subject distance is obtained from focus information through a lens. In a case of bounce light emission, in a case where the estimated pre-light-emitted subject distance is smaller than the estimated lens-focused subject distance, a distance made closer to the estimated lens-focused subject distance from the estimated pre-light-emitted subject distance by a predetermined amount is set as an estimated subject distance for adjusting the main light emission.

Abstract: A subject region discrimination unit 11 discriminates a desired subject region on the basis of ranging information. A subject photometric region setting unit 12 performs image signal processing of the desired subject region that is discriminated by the subject region discrimination unit 11, and sets a photometric region corresponding to the subject region after the processing as a subject photometric region. A photometric value calculation unit 13 calculates a photometric value of the desired subject region by using a photometric value of the subject photometric region that is set by the subject photometric region setting unit 12. For this reason, it is possible to accurately acquire the photometric value with respect to the desired subject region, and it is possible to perform optimal exposure control with respect to the desired subject region by using the photometric value that is calculated by the photometric value calculation unit.

Abstract: There is provided a control device including a setting unit configured to set a first control value used for performing exposure control of a first pixel group and a second control value used for performing exposure control of a second pixel group, the first pixel group and the second pixel group being disposed in a single imaging surface. The setting unit sets the first control value and the second control value to different values before a predetermined photometric process is executed.

Abstract: There is provided a control device including a setting unit configured to set a first control value used for performing exposure control of a first pixel group and a second control value used for performing exposure control of a second pixel group, the first pixel group and the second pixel group being disposed in a single imaging surface. The setting unit sets the first control value and the second control value to different values before a predetermined photometric process is executed.

Abstract: An imaging apparatus, includes a viewfinder optical system for guiding an observation light beam to a viewfinder window, the observation light beam being output from an imaging optical system and then reflected from a main reflective surface, an imaging element for generating an image signal in response to the reception of the observation light beam, an exposure control unit for performing exposure control of the imaging element in response to the image signal from the imaging element, and a light sensing detector, arranged in the vicinity of the imaging element, for measuring light. The exposure control unit determines an exposure control value in the exposure control in response to a light measurement value provided by the light sensing detector if a predetermined condition is satisfied.

Abstract: An imaging apparatus, includes a viewfinder optical system for guiding an observation light beam to a viewfinder window, the observation light beam being output from an imaging optical system and then reflected from a main reflective surface, an imaging element for generating an image signal in response to the reception of the observation light beam, an exposure control unit for performing exposure control of the imaging element in response to the image signal from the imaging element, and a light sensing detector, arranged in the vicinity of the imaging element, for measuring light. The exposure control unit determines an exposure control value in the exposure control in response to a light measurement value provided by the light sensing detector if a predetermined condition is satisfied.

Abstract: When the flash emission mode is set in continuous photography, the amount of emission of the built-in flash during continuous photography and the charge amount of the main condenser needed to realize this light emission are estimated. The gain is increased from a standard value when the charging time for obtaining the aforesaid charge amount is greater than the continuous frame speed. In this way continuous photography is accomplished while the shutter button is fully pressed without reducing the continuous frame speed.

Abstract: When the flash emission mode is set in continuous photography, the amount of emission of the built-in flash during continuous photography and the charge amount of the main condenser needed to realize this light emission are estimated. The gain is increased from a standard value when the charging time for obtaining the aforesaid charge amount is greater than the continuous frame speed. In this way continuous photography is accomplished while the shutter button is fully pressed without reducing the continuous frame speed.

Abstract: A fixing device has a hollow fixing roller, and a pressing roller pressingly contacting the fixing roller to cooperate with the fixing roller to form a nip portion therebetween so as to fuse and fix a toner image onto a recording paper. The fixing device also has a heating element arranged within the fixing roller at a position eccentric from the axis of the fixing roller toward the nip portion, to locally heat the inner wall of the fixing roller at a position corresponding to the nip portion, so as to decrease the time necessary to heat the fixing roller, to prevent offset, and to prevent the recording paper from being wound onto the fixing roller.

Abstract: A laser beam printer having an image formation cartridge which is mounted in and dismounted from a printer body, and a light source for radiating a laser beam modulated in accordance with image data. The laser beam radiated from the light source enters the image formation cartridge from a front side of the printer body toward a rear side of the printer body. The image formation cartridge has a substantially non-reflective surface or alternatively a diffused surface around a laser beam receiving portion.

Abstract: An image fixing device for an image forming apparatus, comprises a hollow cylindrical fixing roller, and cylindrical pressure roller which is kept in contact with the fixing roller so as to rotate in accordance with rotation of the fixing roller. The pressure roller cooperates with the fixing roller to form therebetween a nip extending in a direction of the longitudinal axes thereof and serving to receive a sheet to which a toner image is transferred. The fixing roller is provided with a heater for locally heating the inner wall of the fixing roller at a location corresponding to the nip to fix the toner image to the sheet.