![]() Man, this makes me want to go out and buy the Canon EF 100mm f/2.8L macro lens right now! Even though the aperture is closed down to 7.1, since the focal length is longer, the background is compressed and blurred out. In this example, the image is shot with a longer focal length lens (100mm). In contrast, landscape photographers shoot with wide angle lenses, not only so they can fit more in the scene, but so they can achieve sharpness in the maximum amount of the image as possible. They can get some amazingly shallow depth of field when shooting at 200mm. This is one reason portrait photographers love their 70-200mm massive lenses. Lens Focal Lengthĭid you know the focal length of your lens will also affect your depth of field? I didn’t realize this until a few years ago. I love it! By the way, neither way is “better,” just different depending on the look you are going for. This image was also shot at 70mm, f/2.8 but I had her step several feet away from the wall, which results in a nice creamy blurred out background. In this image, my subject is standing right up against the wall, and it is relatively in focus. This is one reason I often have my subjects step away from a fence or wall if I want some blur back there. On a related note, the distance of your subject from the background will also affect how much bokeh you’ll get in the background. In contrast, this image was also shot at f/2.8, but since the camera is far from the focal point (the bride and groom) much more of the image is in focus, including the first several rows of people in the congregation. In this image, yes the aperture is at f/2.8, which will help us get that blur in the background, but the camera is also right up close to the subject, which allows the foreground to be in focus and the background out of focus. Here are two great examples from Joe’s article mentioned above. Pull your camera far away from your subject and more items will be in focus, even when using the same aperture. The closer your camera is to your subject, the more shallow depth of field you will have in your image. fotosiamo) goes into more depth about the differences between shallow and deep depth of field in his article Aperture Guide Part 2: Shallow and Deep Depth of Field. Check it out! 2. With a wide depth of field (and a closed down aperture, f/22), almost the entire image is in focus. For a shallow depth of field (at a wide open aperture, f/2.8), only a small plane of the image will be in focus, like the one toy in the middle there. The gif animation above illustrates quite well how aperture affects depth of field, or as the definition above says, how many of the objects in the scene will appear to be in focus. Open your aperture all the way to 1.2 and you’ll get that creamy bokeh (blur) we all love in the background. It’s why photographers love lenses with a 1.2 maximum aperture. Aperture (a.k.a f-stop) via Īperture is one of the easiest ways to control your depth of field. Wikipedia defines Depth of Field in optics, particularly as it relates to film and photography, “ as the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image.” What in the heck does that mean? Let’s find out by exploring the four factors that affect the depth of field in your image. I’m guessing some of you are in the same mode of discovery I was in a few years ago, so I’ve compiled a bunch of resources to help you understand the four factors that affect depth of field. ![]()
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