Method for characterizing pixels of an image sensor

A method for characterizing image sensor pixels in an array of image sensor pixels, comprising:

• illuminating a first pixel area of the array, the first pixel area formed of pixels wherein each pixel includes a color filter of a first color;
• measuring a response of a first central pixel of the first pixel area to the illumination of the first pixel area;
• illuminating a second pixel area of the array, the second pixel area formed of pixels wherein a second central pixel includes a color filter of a second color and pixels surrounding the second central pixel include a color filter of the first color;
• measuring responses of the second central pixel and at least one of the pixels surrounding the second central pixel to the illumination of the second pixel area;
• comparing the measured responses of the first pixel area and the second pixel area;
• and
• outputting data indicative of a characterization of crosstalk between the second central pixel and the at least one of the pixels surrounding the second central pixel based at least in part on a result of the comparing.