A method for reading out an image sensor, wherein the image sensor includes an array of pixels arranged in rows and columns, the array including an upper pixel, a middle pixel and a lower pixel consecutively arranged in a column of the array, each pixel including a photosensitive region that collects charge in response to incident light, a floating diffusion, and a transfer gate configured to transfer charge from the photosensitive region to the floating diffusion, wherein the floating diffusions of the upper and middle pixels are electrically connectable to each other by a first bin select transistor and the floating diffusions of the middle and lower pixels are electrically connectable to each other by a second bin select transistor so that the floating diffusions of the upper, middle and lower pixels are electrically connectable to each other by pulsing the first and second bin select transistors to combine charge on the floating diffusions of the upper, middle and lower pixels, the method comprising reading out the photosensitive region of the middle pixel by: (a) electrically connecting the floating diffusions of the upper, middle and lower pixels by turning on the first and second bin select transistors; and (b) resetting the electrically connected floating diffusions and storing a first resulting reset signal of the electrically connected floating diffusions; characterized in that the method further comprises: (c) disconnecting the plurality of floating diffusions by turning off the first and second bin select transistors such that the signal on the floating diffusion of the middle pixel changes to a second resulting reset signal, and storing the second resulting reset signal of the floating diffusion of the middle pixel; (d) operating the transfer gate of the middle pixel to transfer accumulated charge from the photosensitive region of the middle pixel to the floating diffusion of the middle pixel at a first time, wherein if the capacitance of the floating diffusion of the middle pixel is insufficient to hold all of the accumulated charge in the photosensitive region of the middle pixel then this charge is shared between the photosensitive region and the floating diffusion of the middle pixel, and storing a first resulting signal of the floating diffusion of the middle pixel; (e) reconnecting the plurality of floating diffusions by turning on the first and second bin select transistors; (f) operating the transfer gate of the middle pixel to transfer any remaining charge from the photosensitive region of the middle pixel to the electrically connected floating diffusions of the upper, middle and lower pixels at a second time and storing a second resulting signal of the electrically connected floating diffusions; (g) subtracting the first resulting reset signal from step (b) from the second resulting signal from step (f) and subtracting the second resulting reset signal from step (c) from the first resulting signal from step (d). (a) electrically connecting the floating diffusions of the upper, middle and lower pixels by turning on the first and second bin select transistors; and (b) resetting the electrically connected floating diffusions and storing a first resulting reset signal of the electrically connected floating diffusions; (c) disconnecting the plurality of floating diffusions by turning off the first and second bin select transistors such that the signal on the floating diffusion of the middle pixel changes to a second resulting reset signal, and storing the second resulting reset signal of the floating diffusion of the middle pixel; (d) operating the transfer gate of the middle pixel to transfer accumulated charge from the photosensitive region of the middle pixel to the floating diffusion of the middle pixel at a first time, wherein if the capacitance of the floating diffusion of the middle pixel is insufficient to hold all of the accumulated charge in the photosensitive region of the middle pixel then this charge is shared between the photosensitive region and the floating diffusion of the middle pixel, and storing a first resulting signal of the floating diffusion of the middle pixel; (e) reconnecting the plurality of floating diffusions by turning on the first and second bin select transistors; (f) operating the transfer gate of the middle pixel to transfer any remaining charge from the photosensitive region of the middle pixel to the electrically connected floating diffusions of the upper, middle and lower pixels at a second time and storing a second resulting signal of the electrically connected floating diffusions; (g) subtracting the first resulting reset signal from step (b) from the second resulting signal from step (f) and subtracting the second resulting reset signal from step (c) from the first resulting signal from step (d).