Patent ID: 7995913
Filing Date: 2011-08-09
Classification: G03B

Abstract:
1. An electronic camera, comprising: an imaging device that captures a subject image through a photographic lens; a luminance detection device that detects subject luminance; a selection device that selects one of a first mode in which an exposure calculation is executed by using an exposure sensitivity set at the imaging device and the subject luminance detected by the luminance detection device and a first control exposure is determined through an arithmetic operation with regard to at least one of an exposure time period set at the imaging device and an aperture value set at the photographing lens so as to achieve optimal exposure if the optimal exposure is not achieved through the initial exposure calculation, and a second mode in which a second control exposure is automatically determined through an arithmetic operation with regard to the aperture value and the exposure time period so as to achieve the optimal exposure; a first control circuit that executes the exposure calculation again by adjusting the exposure sensitivity if the first control exposure determined in the first mode does not achieve the optimal exposure; a second control circuit that automatically sets the exposure sensitivity at the imaging device in correspondence to the subject luminance detected by the luminance detection device; and a third control circuit that disallows the second control circuit from operating and allows the first control circuit to operate when the first mode is selected, and that disallows the first control circuit from operating and allows the second control circuit to operate when the second mode is selected.