In my last post we talked about aperture, this time we are going to talk about the other two sides of the exposure triangle...ISO and shutter speed. Just like aperture, ISO and shutter speed each can be measured in stops of light. Starting with ISO, the settings are: 50, 100, 200, 400, 800, 1600, 3200, 6400 and so on. Each one will be one more stop of light. So if we go from 100 to 800 ISO that would be three stops of light MORE. Adjusting ISO makes the sensor more sensitive to light, which enables us to shoot in dark locations and keep a fast shutter speed. The trade off with ISO is the higher the ISO that is used, the more noise you will introduce into the image. Keep in mind that noise on screen looks worst than what it will in print. BUT a noisy image is preferred over a missed, under exposed or blurred image. Shutter speed is the next component of the exposure triangle. And just like aperture and ISO it is measured in stops of light. Most Cameras can go as long as a ...