The present disclosure relates to a computer implemented method and system for coordinating taking of a picture using a camera and initiation of a flash pulse of at least one flash device. The method is adapted for a system including a first device and at least one remote device. The method comprises the steps of obtaining a time base for a processor element of the first device, estimating a time base for a processor element of each at least one remote device in relation to the time base of the processor element of the first device, scheduling a timing for initiation of the flash pulse of the respective at least one flash device and/or a timing for taking a picture using the camera in the time base of the first device so that the coordination with the timing for taking the picture is obtained, and obtaining at the respective remote device of the system the scheduled timing of initiation of the remote device in the time base of that device.

In an imaging apparatus that includes a lens unit and a body unit, when a diaphragm value of a variable diaphragm is changed, the lens unit calculates an announcement value indicating the diaphragm value when a prescribed time period has passed since a detection time of a current diaphragm value of the variable diaphragm, and transmits the announcement value to the body unit, and the body unit controls exposure of an image sensor on the basis of the announcement value obtained from the lens unit.

In an imaging apparatus that includes a lens unit and a body unit, when a diaphragm value of a variable diaphragm is changed, the lens unit calculates an announcement value indicating the diaphragm value when a prescribed time period has passed since a detection time of a current diaphragm value of the variable diaphragm, and transmits the announcement value to the body unit, and the body unit controls exposure of an image sensor on the basis of the announcement value obtained from the lens unit.

The present disclosure relates to systems and methods for exposure control. The systems and methods may obtain a target frame brightness value of the image. The systems and methods may also obtain an exposure mode of the electronic device. The systems and methods may also obtain an exposure table corresponding to the exposure mode. The systems and methods may also determine a target value, corresponding to the target frame brightness value, for each of the one or more exposure parameters based on the exposure table. The systems and methods may also adjust one or more of the at least one lens, the at least one exposure-time controller, and the at least one sensor according to the target values of the one or more exposure parameters.

The present disclosure relates to systems and methods for exposure control. The systems and methods may obtain a target frame brightness value of the image. The systems and methods may also obtain an exposure mode of the electronic device. The systems and methods may also obtain an exposure table corresponding to the exposure mode. The systems and methods may also determine a target value, corresponding to the target frame brightness value, for each of the one or more exposure parameters based on the exposure table. The systems and methods may also adjust one or more of the at least one lens, the at least one exposure-time controller, and the at least one sensor according to the target values of the one or more exposure parameters.

An electronic camera comprising an image sensor configured to capture an electronic image and a shutter mechanism. The electronic camera further comprises a controller configured to control the shutter mechanism and the image sensor. The controller comprising a processor and a memory having computer-readable code embodied therein which, when executed by the processor, causes the controller to: open the shutter mechanism, allow light to reach the image sensor for an exposure, automatically cause the image sensor to capture a first digital image of a scene using a first capture setting and automatically cause the image sensor to capture a second digital image of the scene using a second capture setting. The first capture setting includes a first value and the second capture setting includes a second value respectively of at least one of an aperture parameter, a shutter speed parameter, an ISO sensor grain parameter.

An imaging apparatus includes an imager configured to capture an object image, a photometric unit configured to measure a light amount incident on the imager, an acquisition unit configured to acquire a plurality of data indicating a relationship between the light amount incident on the imager and an adjustment amount set in a light amount adjustment unit in the imaging optical system and adjusts the light amount incident on the imager, and a determination unit configured to determine an exposure condition using the data acquired by the acquisition unit. The plurality of data includes first table data that provides a change amount of the light amount incident on the imager based on a change amount of the adjustment amount, and second table data that provides the change amount of the adjustment amount based on the change amount of the light amount incident on the imager.

An imaging apparatus includes an imager configured to capture an object image, a photometric unit configured to measure a light amount incident on the imager, an acquisition unit configured to acquire a plurality of data indicating a relationship between the light amount incident on the imager and an adjustment amount set in a light amount adjustment unit in the imaging optical system and adjusts the light amount incident on the imager, and a determination unit configured to determine an exposure condition using the data acquired by the acquisition unit. The plurality of data includes first table data that provides a change amount of the light amount incident on the imager based on a change amount of the adjustment amount, and second table data that provides the change amount of the adjustment amount based on the change amount of the light amount incident on the imager.

Disclosed are a method for determining semi-synchronous exposure parameters and an electronic device. The method in the embodiments of the present invention comprises: acquiring first exposure parameters corresponding to each lens; if it is determined that a preset EV limit value is not satisfied according to the first exposure parameters of each lens and adjacent lenses, respectively calculating exposure control parameters of each lens; calculating second exposure parameters corresponding to each lens according to the exposure control parameters of each lens and the first exposure parameters corresponding to each lens; if it is determined that the preset EV limit value is satisfied according to the second exposure parameters of each lens and adjacent lenses, determining the second exposure parameters corresponding to each lens to be semi-synchronized exposure parameters of each lens.

An arrangement for determining an amount of light reaching an image sensor of a video camera is disclosed. The video camera comprises an imaging lens system guiding a beam path towards an image sensor and has an aperture plane where a variable aperture is arranged. The inventive arrangement comprises a light sensor arranged to probe light intensity continuously from a portion of the beam path, which portion is located in or near the aperture plane of the imaging lens system.