How to bring emphasis to your main subject.
An understanding of photography composition will help bring emphasis to your selective focus. These same principles apply to many visual arts and are true of graphic design and fine art — they apply whether you are using a digital or SLR camera.
Composition is how you arrange visual elements in your photo, including the main subject. All the technical know-how, like understanding ISO or shutter speed, may help you capture nice exposures, but composition knowledge will help you pull the viewer into your image. “Things that I always look for are light, composition, and subject matter,” photographer Andrew Griswold agrees. “You can get a good image with one or two of those things, but when you blend all three of those together perfectly, you get a great image.”
These elements of photography composition will help you capture the story you want to tell in a portrait or landscape orientation, and many are applicable whether your images are color or black and white.