You can also work with these factors in combination to achieve your compositional goals. For example, if you keep your distance from the subject and your focal length the same, you can lower your aperture setting to see an increase in your depth of field. These three elements can all be used alone to alter your depth of field. While it’s possible to work around these shortcomings to capture a great photo, a wide-angle lens will limit you in using selective focus. If you expand the amount of space between the background and your subject, you’ll also lose sharpness in your subject. But, with long lenses, your subject will get further out of focus as you get closer to it. That being said, you can use any lens to create a blurred background if the distance between the camera and your subject is workable. Asa result, to maintain the same exposure at 18mm and 200mm you will need to adjust one of your other exposure settings. Unfortunately, you’ll find that as you zoom in using a variable aperture telephoto lens your maximum aperture will continually release. While at the longest focal length of 200mm the maximum aperture is f/5.6. At the shortest focal length of 18mm, the maximum aperture is f/3.5. To illustrate this point, consider the Nikon 18-200 mm f/3.5-f/5.6. This means that as your focal length gets longer, your maximum aperture will get smaller. A telephoto lens with a fixed maximum aperture is ideal because it gives you greater control over the size of your depth of field.įixed telephoto lenses can be expensive thus, an alternative is to opt for a lens with a variable maximum aperture. Telephotos lenses with a wide focal range will give you the most flexibility when using selective focus. Telephoto lenses will allow you to place your depth of field and focus on an object that is far away. Your ability to selectively focus is inhibited by long lenses such as telephoto lenses. On the other hand, a short focal length will create a depth of field that is closer to the camera. A longer focal length will produce a depth of field that is farther away from the camera.
The focal length you use will shift your focal length closer or farther away from the camera. Focal Lengthįocal length also directly impacts the depth of field of your image. Resource: Camera Basics: Aperture Explained (With Video) 2. You can use any aperture higher than f/11 to bring most if not your entire frame into sharp focus. In contrast to low f-stops values, a high f-stop will keep a wide area of in your image in sharp focus. For example, if you want to bring a person’s eyes in sharp focus but leave other facial features softly blurred, you can use a small aperture value such as f/2.8. Using a high f-stop value will lead to a deep depth-of-field, while low f-stop values will lead to a shallow depth-of-field.īecause low f-stops yield a shallow depth-of-field using it means that a smaller portion of your frame will be in focus. Apertureį-stops, or aperture, is the perhaps most common way photographers control depth of field. The main factors the influence depth of field are aperture, focal length, and distance. It is the distance between the farthest and closest object in focus. Anything between those two objects will be in focus, while anything outside these two objects will be out of focus. The depth of field is the section of your image that will be in sharp focus. Understanding depth of field is key to using selective focus successfully.
BE FOCUSED PHOTOGRAPHY HOW TO
How to Use Selective Focus in Photography? 1. Selective Focus is also one of the most common ways photographers create the illusion of depth in a photograph. Since our eyes are naturally drawn to objects that are in focus, using selective focus gives you great control over where to place your viewer’s attention. Photographers do this by using a shallow depth-of-field or a small f-stop value. Selective focus is a method in which the focus is narrowed down to the focal point while leaving all other elements in the frame out-of-focus. How to Use Selective Focus in Photography?.What is Selective Focus in Photography?.
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