Quad color filter array image sensor with aperture simulation and phase detection

Aspects of the present disclosure relate to quad color filter array image sensors. A quad color filter array (CFA) image sensor is configured to capture image data. The quad CFA image sensor includes a quad CFA and an image sensor coupled to the quad CFA. The image sensor includes a plurality of quads including a plurality of pixels. For each quad, each pixel of the plurality of pixels is coupled to a same color filter of the plurality of color filters, a first pixel of the plurality of pixels is associated with a first exposure region of the quad and corresponds to a first aperture size, a second pixel of the plurality of pixels is associated with a second exposure region of the quad and corresponds to a second aperture size, and at least two pixels of the plurality of pixels are configured as phase detection pixels.