I learned that there are 3 settings in a digital camera, aperture, ISO, and shutter speed. Aperture controls how much light can enter your camera and effects depth of field. ISO speed controls your camera’s sensitivity to light and image noise. Shutter speed is the duration of exposure, basically how long the lens is open for the picture and motion blur.  Shutter speed is measured in fractions of a second such as 1/1000 of a second. Aperture settings are specified in terms of a f-stop value such as f/1.0. ISO speed is referred to as a number the bigger the number, the more image noise there is, common speeds include 100, 200, 400, and 800. There is also 6 standardized exposure modes, auto, program, aperture priority, shutter priority, manual, and bulb.