A method (500) of providing a picture composition guide on a display device (407) of a camera (450) is disclosed. The method (500) operates by firstly detecting (502) settings of the camera (450). Image analysis (503) is then performed on an image being displayed on the display device (407), the image representing a photographic scene. Next, the presence and location of strong features are determined based on the result of the image analysis (503). One or more markers are selected (505) dependent upon the camera settings and the strong features. The one or more markers are then superimposed over the image on the display device (407).