22Concepts in PhotographyDOF previewYou can use the Custom button to get an idea of what your shot willlook like before shooting. When you press the button, the cameraadjusts the aperture to the predefined settings and shows the results onthe screen. Set the function of the Custom button to Optical Preview.(p. 127)CompositionIt is fun to capture a photo of the beauty of world with a camera. Nomatter how the world is beautiful, however, a poor composition cannotcapture the beauty of it.When it comes to composition, it is very important to prioritize subjects.Composition in photography means arranging objects in a photo.Usually, abiding by the rule of thirds leads to a good composition.Rule of ThirdsTo use the rule of thirds, divide the image into a 3x3 pattern of equalrectangles.To compose photos that best emphasize the subject, make sure thesubject is located at one of the corners of the center rectangle.
