To control depth of field, you need to choose the appropriate lens aperture, which means using a shooting mode that gives you control over the aperture.
While you can use program P mode to do this in a limited way, you'll only get full control with aperture priority mode A or manual M.
In aperture priority, you select the aperture using the relevant command dial, and the camera sorts out the shutter speed; in manual, you can choose both the aperture and the shutter speed with the command dial. Shallow depth of field enables you to throw background and foreground details so far out of focus that they're beyond recognition, directing the eye to the main focal point in the picture. For shallow depth of field you need to select the widest aperture possible e.
This is why many pros prefer lenses with the widest maximum apertures, as these allow depth of field to be truly minimised. Another way to ensure a pleasing, very shallow depth of field is to use a telephoto or long prime lens with a focal length of , of mm. Its narrower angle of view compared to that offered by more wideangle lenses means the area of background captured is smaller and more magnified, which renders it even more blurred out, which can be very pleasing in portraits.
The way your lens renders the out-of-focus points of light with very shallow depth of field is called bokeh pronounced boh-keh , from the Japanese boke, meaning blur or haze. It contributes to the story. The background appears soft and out of focus.
You can use this effect artistically to blur out distracting details and focus attention on the subject. The subject of a photograph is what it's all about. In most images it needs to be in focus. When this distance is large the depth of field is said to be wide or deep. When it's small the depth of field is shallow or narrow. The focus or focusing distance is the distance between the lens and the subject. You'll need to change the focusing distance when you experiment with different lenses to create different depths of field.
This basically means you have to move. The foreground appears soft and blurry. You can use this blurring, known as bokeh, to focus attention on the subject behind and create a soft and moody foreground. Lenses are known by their focal lengths - 14mm, 50mm, mm. Selective focus is important when you have many points of interest.
Also, you can emphasize part of a scene or a feature. For instance, the eyes are the most important part of a portrait. Making the eyes the focal point and letting the image blur ensures the eyes will be the focus. When using a shallow DoF, everything on one plane will be in focus. You can cleverly use this to emphasize a relationship. Two subjects on the same plane will pop out of an otherwise blurry scene. The flip side to guiding the eye towards a focal point is drawing the eye away.
Blur can de-emphasize a defect or anything that could distract from your main subject. Whether this is a crack in a wall or a busy crowd.
One little-known use of a shallow depth of field is to remove visual barriers from your image. Visual barriers like fencing or mesh, get between us and our photographic subject.
A narrow DoF turns it into a soft blur. A family scene can still be shared, but with the child obscured. Which mood depends on your subject and how you use the blur.
Soft edges can create a romantic or nostalgic look. Or by obscuring details, the effect can be mysterious. Taking away details creates an impressionistic scene. Take away even more detail and you can create an abstract image.
We might only see an edge or part of an object. In every picture, there is a point of focus where you actually focus your lens. But there is also an area both in front of , and behind , your point of focus that also appears sharp — and that area corresponds to the depth of field. The sharp zone will vary from photo to photo depending on different factors, such as aperture and distance to the subject discussed in more detail below.
So by adjusting your camera settings and your composition, you can determine the amount of your image that turns out sharp and the amount of your image that ends up blurry.
Images that are sharp from front to back are said to have a deep depth of field. A deep depth of field is popular in landscape photography, where you often want to show every little detail from the scene.
On the other hand, some images have very small zones of focus, known as shallow depth of field. Shallow depth of field photos are immediately noticeable because the subject will remain tack-sharp, while the background renders as a smooth, creamy blur:.
This effect is especially popular in portraiture; photographers use it to draw attention to their subject while preventing background distractions. And you can also find shallow DoF street photography, photojournalistic photography, and even landscape photography.
Looking for more depth of field examples? Whether your image has a shallow depth of field or a deep depth of field can make a huge difference and can often make or break the composition.
By understanding these variables and how they work, you can produce a deep or shallow depth of field at will. The smallest f-numbers correspond to the widest apertures and therefore the shallowest depth of fields. And the larger f-numbers correspond to the narrowest apertures and therefore the deepest depth of fields. Now, adjusting the aperture f-stop of your lens is the simplest way to control your depth of field while setting up your shot.
So if you get up-close and personal when photographing a flower, the depth of field will shrink. And if you take ten steps backward, the depth of field will increase.
0コメント