Here’s a photo of my son kicking a soccer ball at a local field. Although he’s technically the subject, the sky that day was such that I wanted it to be included into the composition. Using a wide angel lens provided the ability to capture him and much of the sky in the background. The overall effect enhances the main subject in this image.
The rule of thirds is a compositional rule in photography.
The rule states that an image should be divided into nine equal parts by two equally spaced horizontal lines and two equally spaced vertical lines, and that important compositional elements such as the main subject,should be placed along these lines or their intersections. This creates more interest in the composition than simply centering the main subject.
In this image that I shot of a sunset at a local beach, using the rule of thirds also allowed me to include the setting sun in the background.
Shadows can be an unwanted distraction in color photographs. In black and white photos however, you can use shadows to draw a viewers attention. This is an example of using shadows and lines to enhance composition.
This image was taken in Central Park NYC in 2009. I noticed the pattern of strong lines in the bricks overhead and seen potential for a good black and white composition. I switched to my 10-20mm lens to include as much of the pattern of lines in the shot as possible. I waited for someone to approach the tunnel from the other side to give the photo added depth and lead the viewers eyes to the main subject.
Technical Info: Nikon D40 with Sigma 10-20mm, Exposure: 1/8sec at f/6.3, ISO: 200, Focal length: 15mm
Here’s another example of the use of leading lines in a photograph. This was taken at a local beach. The fence and strong shadows create a visual path that leads the viewers eye into the photo. The figure on the dune adds scale to the image. Here is a link to an article that gives more detailed information on the use of lines in photography
Technical Info: Nikon D40 with Sigma 10-20mm, Exposure: 1/800sec at f/5.6, ISO: 200, Focal length: 14mm