Solid-state imaging device and imaging system

A solid-state imaging device comprising:

• a pixel array unit in which a plurality of pixels each including a photoelectric converter are arranged over a plurality of rows and a plurality of columns;
• a plurality of output lines each connected to the pixels arranged on a corresponding column of the plurality of columns;
• and
• a plurality of column circuits each connected to a corresponding output line of the plurality of output lines,
• wherein each of the plurality of column circuits is configured to operate in a first mode and a second mode,
• in the first mode, the column circuit amplifies a single signal based on charges generated in the photoelectric converter of at least one pixel connected to the corresponding output line at a common gain to output a first pixel signal and a second pixel signal, and
• in the second mode, the column circuit amplifies the single signal at a first gain to output a first pixel signal and amplifies the single signal at a second gain that is lower than the first gain to output a second pixel signal.