Patent ID: 8305465

Claim:
An image pick-up apparatus comprising: a pixel adding unit which generates a pixel addition image by executing a pixel addition process for an image shot by an image pick-up element; a luminance obtaining unit which obtains a subject luminance; a pixel addition ratio changing unit which changes a pixel addition ratio of the pixel addition process by the pixel adding unit from a ratio of 1 to a ratio other than 1, in accordance with the subject luminance obtained by the luminance obtaining unit; a size setting unit which sets a pixel size at a time of image recording to a pixel size designated by a user; an enlarging unit which enlarges a pixel size of the pixel addition image generated by the pixel adding unit in accordance with a predetermined enlarging ratio, when the pixel addition ratio is changed to a ratio other than 1 by the pixel addition ratio changing unit; and an enlarging ratio changing unit which changes the predetermined enlarging ratio to an enlarging ratio at which the pixel size of the pixel addition image is enlarged to the pixel size set by the size setting unit, when the pixel addition ratio is changed to a plurality of ratios other than 1 by the pixel addition ratio changing unit.