23Concepts in PhotographyOptical previewYou can touch the Custom button on the screen to view the opticalpreview before capturing a photo. The camera adjusts the aperture to thepredefined settings and shows the results on the screen. Set the Custombutton to Optical Preview. (p. 150)FCompositionIt 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.
