At the beginning when Prue is taking pictures, she points her camera upwards at the woman. Being what seems to be a nice sunny day, her shutter speed would not be 1/60. It should be a faster speed because of all the light. Also, her f/stop is always on f/11 yet her shutter speed changes. Because these two factors work together, as one increases, the other decreases and visa versa. If they don't the pictures either come out under/over exposed.