Photography uses many techniques to achieve excellent picture quality which is pleasing to the viewer. Here are a few examples of a small number of these techniques.
The rule of thirds is a method used in the placement of objects in an image. This setting of placing the objects along the line of a third adds to the visual appeal for the viewer. Note how the building in this image lies on two of the third intersections, it is neither too far towards the edge of the image where we might think it unimportant to the photo, nor is it dead center, which we might find boring.
Here is one of my own examples of the rule of thirds, note that the plant is along the lines of a third more or less and how our eyes tend to be drawn to it as the primary object of the image.
By: Orel’s Photojournalism Blog http://akinsphotojblog-pikachu512.blogspot.com/2010_09_01_archive.html Wednesday, Sep, 29th, 2010
Leading Lines are another means by which a photographer creates pleasing images and effects what we look at as viewers. Here the lines of the road serve to guide our vision through the photograph either from back to front or front to back.
Here is an example of leading lines of my own making. The cord serves to guide the eye from the upper left of the image, down to the headset below.
By: Caroline MacDonald, Monday, Oct, 18th, 2010 http://carolinejournal5.blogspot.com/2010/10/3-short-depth-of-field-and-3-long-depth.html