Image capture apparatus, method of controlling image capture apparatus, and electronic device

摘要

An image capture apparatus is provided that is capable of accurately determining exposure conditions of multiple images to be used in high dynamic range compositing in a short duration, based on a captured image. A scene dynamic range is computed based on luminance information obtained from an image captured with a standard exposure according to a luminance zone to be prioritized in high dynamic range shooting and luminance information obtained from an image captured with an over-exposure or an under-exposure relative to the standard exposure. An exposure range of multiple images for creating a high dynamic range image is determined according to the computed dynamic range.

主权项

1. An image capture apparatus capable of high dynamic range (HDR) shooting in which a plurality of images for creating a high dynamic range image are captured, comprising:
an image capture unit; a standard exposure computation unit that computes an HDR standard exposure that is a standard exposure used for high dynamic range shooting, by correcting a standard exposure, which is based on a subject luminance of an image obtained by the image capture unit, toward over-exposure or under-exposure; a dynamic range computation unit that computes a scene dynamic range based on first luminance information obtained from an image captured with the HDR standard exposure, and based on second luminance information obtained from an image captured with an exposure, wherein the standard exposure exists between the exposure and the HDR standard exposure; and a determination unit that determines an exposure range of a plurality of images for creating a high dynamic range image, based on the scene dynamic range computed by the dynamic range computation unit, wherein the first luminance information is obtained before an instruction to begin shooting is given, and wherein the second luminance information is obtained after an instruction to begin shooting is given.