Sunlight with pop-up flash
As the distance is only 5 feet, the flash built into the camera (Canon EOS 50D) can easily handle this. And is included in this series for comparison. Flash compensation is 0 EV, but the camera EV is at -1.5, to allow for the additional light from the flash. At least in its PASM modes, Canon TTL does not do this light balancing for you.