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What is the Depth Of Field in Photography

What is the Depth Of Field in Photography?

If you’ve ever wondered what depth of field is in photography or how to understand the depth of field in photography, you’ve come to the right place. Depth of field is defined as the distance between the closest and farthest sharp objects in an image.

This means that the depth of field is the area of your image that is completely visible to the viewer’s eye. Depending on the type of photograph you want to take, you can have a shallow or a deep depth of field.

Keep in mind that there is always a single point of focus in any picture to help you understand this better. However, there are zones in front of and behind the focal point that can appear in focus or blurred. These zones can be quite small, as in a shallow depth of field where only your subject’s immediate surroundings are visible. Zones can also be broad, with the majority of the image in focus.

Why is the depth of field important?

Depth of field is critical because it makes your photography stand out. By knowing what’s in focus and what isn’t, you can create more artistic shots, more sophisticated photography, and a more impressive portfolio. If you want to be a professional photographer, you must learn how to emphasize certain aspects of your images while ignoring others. This is what the concept of depth of field is all about.

Different Depths of Field

A shallow depth of field is required if you want to take a photograph with the entire image sharp from front to back. When it comes to landscape photography, this is the most popular – when you need to show off every single detail in a scene. It’s the same with architectural photography, everyday photography, and anything else where every detail counts.

With a narrow depth of field, also known as a shallow depth of field, you draw attention to only one part of the photograph, leaving the rest blurry. Not in a bad way, but more like a creamy blur with the background smoothed out.

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A shallow depth of field is almost always used for portrait photography, macro photography, and anything else where you want to focus on a specific subject while ignoring the background and foreground.

How do you determine the Depth of Field?

When taking pictures, it’s difficult to tell what your depth of field is. Fortunately, most modern DSLR cameras include a preview button that displays the depth of field. Simply press the button while looking through the viewfinder, and the camera will show you how the image will look.

Live view can also be used to preview the depth of field. If you want to measure the depth of field yourself, you can always use a special online calculator to determine the exact depth of field you’re using. You can also use your phone to download apps that help you calculate the depth of field.

How do you change Depth of Field in Photography?

When taking photographs, you can alter the depth of field in a variety of ways. You can change the aperture, move your camera closer or farther away from the subject, and experiment with the focal length of your lens.

Adjusting Aperture

The aperture is your camera’s eye, the opening through which light passes and enters the sensor. When your aperture is open, more light enters. When your aperture is closed, less light enters your camera sensor. When it comes to producing different depths of field, this single setting is one of the most important to understand.

Shallow depths of field are produced more effectively with larger apertures. When your camera’s eye is wide open, you will create a background blur in your image while keeping your target completely in focus. Just keep in mind that the larger the aperture, the lower the F-stop.

Simply use a smaller aperture to achieve a shallow depth of field (a higher F-stop). By closing your camera’s eye almost completely, you’ll get a crystal-clear photograph from front to back with no blur.

Camera Distance

Depth of field is heavily influenced by the distance between your camera and the subject. The smaller the depth of field, the closer you point your camera at your subject.

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Consider this to be your own eyes. When you get extremely close to something, your eyes only focus on that subject, and the rest of your vision blurs. The same is true for cameras. When your lens is only a few inches away from a subject, the subject will be clear while everything else will be a smudge in the background.

However, if you keep your camera a good distance away from your subject, everything else in the picture will appear sharp. It’s the same as if you were standing at the edge of the room and looking at someone on the other side of the room; they’ll be completely in focus. The depth of field will be the same if you take a picture from the same distance.

Keep in mind that moving the camera works best with small subjects like objects and people. Even moving the camera a few inches closer to your subject can drastically alter the depth of field.

When photographing buildings, landscapes, and other subjects in nature, you don’t have the option of moving the camera a few inches for a different depth of field. This is why, when photographing vast environments, you will almost always have a large depth of field.

Focal Length

The last way to change the depth of field is to change the focal length. A wide-angle lens, for example, has a short focal length and will always provide a deeper depth field. A telephoto lens will have a long focal length and a shallow depth of field.

But there’s a slight catch here. Only when shooting from the same distance away will you notice the difference. With a wide-angle lens, you’ll always have a shallow depth of field and the entire image will be in focus. However, as your focal length increases, the area around the subject becomes blurrier while the subject itself becomes crisper.

The majority of wide-angle lenses have a focal length of around 70mm. As the focal length increases to 100mm, 130mm, and even 200mm, your subject becomes larger, more in focus, and more detailed. The depth of field becomes increasingly narrow until only your subject is clearly visible in the image.

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Does camera size affect Depth of Field?

The actual size of your camera sensor is something that many people overlook when discussing depth of field. Cameras with smaller sensors also have smaller lenses, resulting in a larger depth of field. When compared to a camera with a full-sized, large sensor, this is the case.

This is the primary reason why changing the depth of field with a smartphone camera, or even a simple point-and-click camera, is nearly impossible. These devices have extremely small sensors that only function to provide a large depth of field. Because the camera sensor is too small, you can’t really change the settings to get a narrow depth of field.

This is one of the reasons why your phone camera feels so limited if you’ve ever tried to get creative with it. You can’t really use selective focusing to highlight specific parts of the image. You can get closer to your subject, but there is no way to change the focal length or achieve a shallow depth of field.


To summarize what we’ve learned today, the depth of field in photography is the area of an image that is completely in focus. The depth of field varies depending on the aperture, your proximity to the subject, and the focal length of your lens.

You’ll be able to take much more creative photos once you understand how to manipulate the depth of field. However, you will need to practice this in real life. It’s one thing to learn about it online, but the only real way to improve as a photographer is to go out and take different shots and experiment with the depth of field.

Just keep in mind that if you want to experiment with depth of field, you’ll need a real camera, such as a DSLR or a mirrorless model. When it comes to getting creative with depth of field, smartphones simply do not work.

We recommend bringing a wide-angle lens and a telephoto lens with you on your next photoshoot, then practicing with a variety of subjects at various distances and apertures.

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