Mechanism for controlling flash light emission, camera with the mechanism, and its control method

A method for controlling an emission of flash light, by making use of an image sensor for detecting an image-of a subject to be photographed and for outputting subject information by processing data of the image, comprising the steps of:

• receiving a light which reflects from the subject by a plurality of light adjustment sensors, wherein each of the light adjustment sensors has a light receiving region which corresponds to at least a part of the light, and wherein the light adjustment sensors receive the light when the flash light is emitted;
• calculating a contribution rate of an output supplied from each of the light adjustment sensors, on a basis of the subject information which is output from the image sensor;
• and
• controlling the emission of flash light, on a basis of the contribution rate thus calculated.

A camera, comprising:

• an image sensor for sensing an image of a subject to be photographed, and for outputting subject information by processing data of the image;
• a calculator for calculating a compensation value for light adjustment, on a basis of the subject information output from the image sensor;
• and
• a controller for controlling an emission of a flash light, on a basis of the compensation value for light adjustment calculated by the calculator.