Digital Photo 101: Depth of Field

Digital Photo 101: Depth of Field

In today’s world of Instagram and smartphone photography, how do you capture images that really stand out? With Digital Photography Complete Course you can learn everything you need to know in 20 weeks to make your photos look like they were shot by a professional. One important lesson that will set your photos apart is depth of field.

Using depth of field lets you highlight important elements while downplaying distractions. It refers to the area of acceptable sharpness within an image. In reality, only the elements you have chosen to focus on—and anything else located on the same plane—will be perfectly sharp, but a certain area in front of and behind your subject will also appear sharp.

The depth of field depends on three factors:

1. Aperture of the lens

The size of the aperture of a lens is indicated by a measurement called an f-number—the smaller the number, the larger the opening. A large aperture (indicated by a small f-number, such as f/2.8) will result in shallow depth of field, while a small aperture (indicated by a large f-number such as f/22) will result in a deep depth of field.

2. Subject distance

The closer your lens is to your subject, the less depth of field you will obtain in your image, and vice versa.

3. Focal Length

The focal length of the lens determines how much it can see (known as its angle of view), and how magnified a subject appears in the frame. Shorter focal lenses (less than 50mm) have a wide angle of view, so the subject takes up less of the frame than it would if it were shot at the same distance with a telephoto lens, as does any blur. As a result, short focal-length lenses appear to offer greater depth of field than long focal lengths.

Learn how to create dynamic photos by using shallow depth of field and deep depth of field.

Digital Photography Complete Course is a home-based, foundation-style course that is the perfect interactive learning program for any aspiring photographer that will teach you everything from choosing the right camera to boosting your postproduction prowess.

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