This technology, while suppressing deterioration of image quality, a solid-state imaging device and an electronic device to be able to expand the dynamic range.
Solid-state image pickup device has at least one color the output pixel is three or more size of the output pixel is a pixel based on the output unit of a pixel signal, arranged said output pixels of a plurality of colors according to a predetermined pattern and a signal processing unit for performing a pixel unit basic pattern pixel group are arranged which are, the synthesis process of the plurality of pixel signals of magnitude the same color from different said output pixel. This technique, for example, can be applied to a CMOS image sensor.