In camera calibration (camera resectioning process, e.g. camera calibration with OpenCV) does the result for focal lengths fx and fy depend on the photo-sensitive area inside the pixel ?
If I have a camera sensor (CCD/CMOS) with a perfect square grid arrangement of pixel elements, but each pixel element has rectangular pixel sensitive area (photodiode). For example, pixel dimensions are a x a, but photosensitive area dimensions are 0.5*a x a. Would result of camera calibration still be fx = fy ?
And what if the pixel sensitive area has some arbitrary shape due to additional electronics in CMOS ?