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Chapter 4 Camera Settings and Digital Exposure 61 Exposure Modes All modern digital cameras are equipped with several shooting modes that adjust how much control you want the camera to have with exposure settings for each shot. On one end of the scale, you have manual mode where you must personally set the aperture and shutter speed for the right exposure. On the other end you have program mode, or automatic mode, where the camera decides the best setting for each shot -- all you do is push the button. Each shooting mode is useful in different situations and there will be times during the wed- ding day when each of the different modes is most appropriate. Knowing when to choose one mode over the others demands that you understand the strengths and weaknesses of each one. In the following sections I discus each mode and offer examples of when you might choose to use each one during a typical wedding day. Aperture priority mode Aperture priority mode is perhaps the most useful exposure mode for general daytime shoot- ing. With this mode, you pick the aperture and the camera chooses the shutter speed. Choosing the aperture yourself gives you the ability to pick the amount of depth of field needed in each scene. The only drawback to the aperture priority mode is that the camera sets slower shutter speeds as the scene gets darker in the late evening. If you fail to pay attention at this time of day, you will eventually start getting unacceptable amounts of blur. This mode works fantasti- cally in the daytime; you just have to remember to raise your ISO and/or switch to a different mode as the light gets low.