An image sensor may include a pixel array with high dynamic range functionality and phase detection pixels. The phase detection pixels may be arranged in phase detection pixel groups. Each phase detection pixel group may include three adjacent pixels arranged consecutively in a line. A single microlens may cover all three pixels in the phase detection pixel group, or two microlenses may combine to cover the three pixels in the phase detection pixel group. The edge pixels in each phase detection pixel group may have the same integration time and the same color. The middle pixel in each phase detection pixel group may have the same or different color as the edge pixels, and the same or different integration time as the edge pixels. Phase detection pixel groups may also be formed from two pixels that each are 1.5 times the size of neighboring pixels.