Electric camera and signal amplification ratio adjusting method for therefor

A signal amplification ratio adjusting method for an electronic camera, comprising:

• a first step of obtaining color information of a standard photography condition, which indicates a ratio between different color signals, in such a manner that a stored electric charge quantity to be stored in an imaging section becomes a predetermined quantity;
• a second step of obtaining color information of a low-output photography condition different from the standard photography condition in such a manner the stored electric charge quantity becomes different;
• a third step of judging an application range of an amplification ratio of a light receiving signal based on the color information obtained at the first step and the color information obtained at the second step;
• and
• a fourth step of storing the application range of the amplification ratio of the light receiving signal judged at the third step.

A signal amplification ratio adjusting method for an electronic camera, comprising:

• a first step of comparing color information of a standard photography condition, which indicates a ratio between different color signals, with a first predetermined value in such a manner that a stored electric charge quantity to be stored in an imaging section becomes a predetermined quantity;
• a second step of comparing the color information of the standard photography condition with a second predetermined value different from the first predetermined value based on color information of a low-output photography condition different from the standard photography condition;
• a third step of judging an application range of an amplification ratio of the light receiving signal based on a comparison result of the first step and a comparison result of the second step;
• and
• a fourth step of storing the application range of the amplification ratio of the light receiving signal judged at the third step.

An electronic camera comprising:

• imaging means for storing an electric charge as a light receiving signal having at least color information with respect to received light beams;
• standard color information acquiring means for acquiring standard color information indicating a ratio between different color signals, from the light receiving signal obtained by driving the imaging means in such a manner that a stored electric charge quantity to be stored in the imaging means becomes a predetermined quantity;
• reference color information acquiring means for acquiring reference color information indicating a ratio between different color signals, from the light receiving signal obtained by driving the imaging means in such a manner that the stored electric charge quantity becomes lower than that of the standard color information acquiring means;
• and
• storing means for storing an application range of an amplification ratio of the light receiving signal determined based on the reference color information with respect to the standard color information.