Photoelectric conversion apparatus and equipment

A photoelectric conversion apparatus comprising:

• a plurality of pixels;
• and
• a processing circuit configured to process signals read from the plurality of pixels,
• wherein each pixel of the plurality of pixels includes:
• a photoelectric conversion element,
• a first amplification unit including an input node to which a signal from the photoelectric conversion element is input, the first amplification unit being configured to output a signal obtained by amplifying a signal level of the input node,
• a holding capacitor section configured to hold the output signal of the first amplification unit and have a variable capacitance, and
• a second amplification unit including a second input node to which a signal output from the holding capacitor section is input, the second amplification unit being configured to output a signal obtained by amplifying a signal level of the second input node,
• wherein the capacitance of the holding capacitor section is changed based on a change in driving power of at least one of the first and second amplification units.