Photoelectric conversion apparatus with scanning operating modes

A photoelectric conversion apparatus comprising:

• pixels disposed two-dimensionally in a row direction and a column direction;
• an L number of (L is 3 or greater integer) vertical signal lines disposed on each pixel column;
• an M number of (M is 2 or greater integer) selection circuits disposed in each pixel, each of the selection circuits respectively connecting one of the pixels to a different vertical signal line;
• a vertical scanning circuit configured to scan the selection circuits;
• and
• a control unit,
• wherein the control unit is configured to set a first operation mode in which the vertical scanning circuit performs a single read scanning operation at a time, and a second operation mode in which the vertical scanning circuit performs a plurality of read scanning operations at a time,
• wherein, in the first operation mode, the control unit is configured to perform the single read scanning operation using a first selection circuit out of the M number of selection circuits,
• wherein, in the second operation mode, the control unit is configured to perform an operation which is one of the plurality of read scanning operations using a second selection circuit, which is different from the first selection circuit, out of the M number of selection circuits,
• wherein, in the first operation mode, the single read scanning operation is performed for a range from a first row to a second row,
• wherein, in the second operation mode, the operation is performed for a third row and a fourth row, and
• wherein the third row and the fourth row are located between the first row and the second row.