An optical filter for a camera is switchable between a reflection state and a transmission state. The optical filter includes a first plurality of liquid crystals configured to dynamically form cholesteric phase structures in the reflection state that block right-handed circularly polarized light in a spectral light sub-band and transmit light outside of the spectral light sub-band. The first plurality of liquid crystals dynamically forms a nematic phase arrangement in the transmission state that transmits light in the spectral light sub-band. The optical filter further includes a second plurality of liquid crystals configured to dynamically form cholesteric phase structures in the reflection state that block left-handed circularly polarized light in the spectral light sub-band and transmit light outside of the spectral light sub-band. The second plurality of liquid crystals dynamically form a nematic phase arrangement in the transmission state that transmits light in the spectral light sub-band.

An optical filter for a camera is switchable between a reflection state and a transmission state. The optical filter includes a first plurality of liquid crystals configured to dynamically form cholesteric phase structures in the reflection state that block right-handed circularly polarized light in a spectral light sub-band and transmit light outside of the spectral light sub-band. The first plurality of liquid crystals dynamically forms a nematic phase arrangement in the transmission state that transmits light in the spectral light sub-band. The optical filter further includes a second plurality of liquid crystals configured to dynamically form cholesteric phase structures in the reflection state that block left-handed circularly polarized light in the spectral light sub-band and transmit light outside of the spectral light sub-band. The second plurality of liquid crystals dynamically form a nematic phase arrangement in the transmission state that transmits light in the spectral light sub-band.

An image projection apparatus includes an optical element configured to change a light amount of light emitted from the light source, an information acquirer configured to acquire information on a gradation of the image signal, a corrector configured to correct the image signal in accordance with a change in the light amount, and a controller configured to correct the image signal based on at least one of first correction data used to correct the image signal in accordance with the change in the light amount caused by controlling the optical element, and second correction data used to correct the image signal in accordance with the change in the light amount caused by controlling the supply power.

An image projection apparatus includes an optical element configured to change a light amount of light emitted from the light source, an information acquirer configured to acquire information on a gradation of the image signal, a corrector configured to correct the image signal in accordance with a change in the light amount, and a controller configured to correct the image signal based on at least one of first correction data used to correct the image signal in accordance with the change in the light amount caused by controlling the optical element, and second correction data used to correct the image signal in accordance with the change in the light amount caused by controlling the supply power.

Embodiments of systems and methods for using electronic diffusers to implement message indicators are described. A segment of a diffuser attached to an electronic device is configured to indicate an informational message in response to signals that result in a change to an optical property. A set of information to be displayed using the segment is determined, and a signal is transmitted to the segment to display the information.

Embodiments of systems and methods for using electronic diffusers to implement message indicators are described. A segment of a diffuser attached to an electronic device is configured to indicate an informational message in response to signals that result in a change to an optical property. A set of information to be displayed using the segment is determined, and a signal is transmitted to the segment to display the information.

A display control apparatus includes a switching unit configured to switch a display mode of a setting screen between a first display mode and a second display mode, the setting screen being arranged to display a plurality of setting items, including a predetermined setting item; and a control unit configured to, in the first display mode, display on the setting screen a first item related to the predetermined setting item and a plurality of items related to a plurality of setting items different from the predetermined setting item, and display a second item, on the setting screen in the case that the first item is selected, the second item representing candidate values which may be set, and in the second display mode, display on the setting screen a third item representing candidate values which may be set, and display a plurality of items related to the plurality of setting items.

A display control apparatus includes a switching unit configured to switch a display mode of a setting screen between a first display mode and a second display mode, the setting screen being arranged to display a plurality of setting items, including a predetermined setting item; and a control unit configured to, in the first display mode, display on the setting screen a first item related to the predetermined setting item and a plurality of items related to a plurality of setting items different from the predetermined setting item, and display a second item, on the setting screen in the case that the first item is selected, the second item representing candidate values which may be set, and in the second display mode, display on the setting screen a third item representing candidate values which may be set, and display a plurality of items related to the plurality of setting items.

An image capturing apparatus comprises: an image sensor; a light shielding member; a thermometer that measures temperature of the image sensor; and a controller that controls the image sensor so as to perform continuous shooting to obtain a plurality of images. The controller determines a number of images to be shot in the continuous shooting, determines, before starting the continuous shooting, whether or not to shoot a black image with the image sensor being shielded from light by the light shielding member based on the temperature measured by the thermometer and the determined number of images to be shot, and in a case where it is determined to shoot a black image, controls to shoot a black image every time an image is shot in the continuous shooting.

Methods, systems, and apparatus, for controlling optical transmission of a lens of a camera. A method includes obtaining a first image from a camera, determining that the first image does not satisfy an image requirement, in response to determining that the first image does not satisfy an image requirement, increasing an optical transmission of a lens of the camera, and, obtaining a second image with the camera while the optical transmission of the lens of the camera is increased.