Photography The formula n=log2 1/p represents the change in the f-stop setting n to use less light where p is the fraction of sunlight. a. Benitos camera is set up to take pictures in direct sunlight, but it is a cloudy day. If the amount of sunlight on a cloudy day is 1/4 as bright as direct sunlight, how many f-stop settings should he move to accommodate less light? B. Graph the function c. Use the graph in part b to predict what fraction of daylight Benito is accommodating if he moves down 3 f-stop settings. Is he allowing more or less light into the camera.