Sometimes it’s the subtle little things that make all the difference in a picture. I don’t just do wedding, portrait and event photography. I like to do all kinds.Last summer Theresa and I went camping in Glacier National Park in Montana. On a cloudy day there, I had a chance to do a long exposure waterfall picture. The difference exposure time can make in a picture of running water can be seen in these two pictures. The top one was exposed for 1/200th of a second while the bottom for a third of a second. I compensated for the difference by stopping down the aperture, which means that the opening inside the lens that the light comes through was narrower.