I have read a lots of posts and night viewing always comes down to two factors in most posts, low megapixels and a large image sensor. This 4K camera (SD6AL830V-HNI) has a larger image sensor than this 1080p camera (SD6AL245U-HNI). Obviously the 4K camera is going to be better during the day but which camera is better at night? The one with lower pixels or the one with the larger sensor.