Image sensor and image-capturing device having pixels for focus detection and pixels for image generation

An image sensor, comprising:

• a first photoelectric converter that photoelectrically converts light to generate an electric charge;
• a first output unit that outputs a first signal based on the electric charge generated by the first photoelectric converter;
• a plurality of second photoelectric converters that photoelectrically convert light to generate electric charges;
• a plurality of second output units that output second signals based on the electric charges generated by the plurality of second photoelectric converters;
• an output line to which the first output unit and the plurality of second output units are connected, and to which at least one of the first signal and the second signals is output;
• a first control line for controlling output of the first signal from the first output unit to the output line;
• second control lines for controlling outputs of the second signals from the plurality of second output units to the output line;
• and
• third control lines for controlling at least one of the output of the first signal from the first output unit to the output line and the outputs of the second signals from the plurality of second output units to the output line, wherein:
• the first output unit is controlled via the first control line and the third control lines;
• and
• the plurality of second output units are controlled via the second control lines and the third control lines.