Patent ID: 7645978

Claim:
An image sensing apparatus, comprising: an image sensor having two or more different photoelectric conversion characteristics, and adapted to output image signals having the respective photoelectric conversion characteristics individually; an amplifying section for amplifying the image signals having the respective photoelectric conversion characteristics; a gain controlling section for controlling a gain of the amplifying section; an output section for outputting the image signals having the respective photoelectric conversion characteristics amplified by the amplifying section; and an image generating section for synthesizing the image signals outputted from the output section to generate an image, wherein the gain controlling section calculates a gain of the image signals having the respective photoelectric conversion characteristics based on the image signals having the respective photoelectric conversion characteristics to control the gain of the amplifying section by using the calculated gain with respect to each of the photoelectric conversion characteristics, and the photoelectric conversion characteristics of the image sensor include two or more linear characteristics whose sensitivity is different from each other.