To avoid misplaced focus, use focus lock when taking pictures. Without focus lock With focus lock When taking a photo of a subject against a beautiful backdrop, deciding on the composition, then position your main subject closer to the camera to make the subject appear bigger in the picture. The focusing brackets in the center area of the viewfinder tend to make for uninspiring compositions in which the subject is positioned dead center. If it is a landscape, pay particular attention to framing up the subject that interests you most, and balance the other picture elements to your liking. You may want to shoot particularly appealing subjects both ways.
Unique composition emphasizes height and depth.
Many AF SLR cameras feature various built-in exposure modes for various photographic situations. This feature is good for snapshots of such occasions as weddings and carnivals. When a shutter speed is selected, the camera automatically adjusts the aperture for optimal exposure. Good for shooting quick-moving sports action, the flow of river water, etc. Good for pictures of plants or landscapes shot at proper respective depth of field settings.