Readout circuitry in image sensors

An image sensor comprising:

• an image sensor pixel array having a first column of pixels coupled to a first readout path and a second column of pixels coupled to a second readout path;
• amplifier circuitry having an input terminal;
• and
• first and second capacitors coupled to the input terminal of the amplifier circuitry, wherein the first readout path is coupled to the input terminal of the amplifier circuitry via the first capacitor and a first switch, the first capacitor is configured to receive reset level and image level signals for the first column of pixels, the second readout path is coupled to input terminal of the amplifier circuitry via the second capacitor and a second switch, and the second capacitor is configured to receive reset level and image level signals for the second column of pixels.

An imaging system comprising:

• an array of image sensor pixels;
• shared readout circuitry coupled to a first pixel in a first column of the array and coupled to a second pixel in a second column of the array;
• and
• control circuitry configured to control the shared readout circuitry to perform a shared reset level readout operation for the first and second pixels.