A solid state image sensor, comprising: a plurality of charge-to-voltage converters; a pixel array having a plurality of pixels arranged therein, wherein each pixel includes a photodetector as well as a transfer gate configured to transfer charge photoelectrically converted by the photodetector to one of the charge-to-voltage converters; a plurality of reset gates configured to reset the photodetectors; and a plurality of amplifiers configured to output a signal corresponding to the potential of the photodetectors, wherein the voltage level of the amplifier power supply is fixed, a reset gate power supply is configured to selectively take either a first voltage level or a second voltage level to reset the charge-to-voltage converters, the second voltage being higher than the first voltage level, and additionally, higher than the voltage level of the amplifier power supply, each of the charge-to-voltage converters (25, 391) is provided in the center of a set of four pixels arranged in a 2x2 layout in the horizontal and vertical directions, the transfer gates (22, 371) of the set of four pixels are disposed in four directions around the charge-to-voltage converter (25, 391), such that the charge-to-voltage converter (25, 391) is enclosed by the transfer gates, each of the charge-to-voltage converters (25, 391), reset gates (23, 401), and amplifiers (24, 381) are shared among the set of four pixels, a group of eight pixels formed by vertically disposing two of the sets of four pixels is taken to be the basic component unit of the pixel array, and the two sets of four pixels share a reset drain such that two reset transistors are provided for every group of eight pixels. a plurality of charge-to-voltage converters; a pixel array having a plurality of pixels arranged therein, wherein each pixel includes a photodetector as well as a transfer gate configured to transfer charge photoelectrically converted by the photodetector to one of the charge-to-voltage converters; a plurality of reset gates configured to reset the photodetectors; and a plurality of amplifiers configured to output a signal corresponding to the potential of the photodetectors, wherein the voltage level of the amplifier power supply is fixed, a reset gate power supply is configured to selectively take either a first voltage level or a second voltage level to reset the charge-to-voltage converters, the second voltage being higher than the first voltage level, and additionally, higher than the voltage level of the amplifier power supply, each of the charge-to-voltage converters (25, 391) is provided in the center of a set of four pixels arranged in a 2x2 layout in the horizontal and vertical directions, the transfer gates (22, 371) of the set of four pixels are disposed in four directions around the charge-to-voltage converter (25, 391), such that the charge-to-voltage converter (25, 391) is enclosed by the transfer gates, each of the charge-to-voltage converters (25, 391), reset gates (23, 401), and amplifiers (24, 381) are shared among the set of four pixels, a group of eight pixels formed by vertically disposing two of the sets of four pixels is taken to be the basic component unit of the pixel array, and the two sets of four pixels share a reset drain such that two reset transistors are provided for every group of eight pixels.