Sharp images

Keep sharp images by controlling the depth of field

Depth of field can be described as the distance from front to rear in a single image is clear enough. The parts of an image outside this should be fuzzy and the depth of field. There are some ways to the depth of focus: surveillance using a small aperture, focus on one point away from your camera or using a lens of short focal length.

Let us look at the tools necessary to control depth of field.

Aperture and f / stops: The opening is an opening in the center of the lens that light passes. The amount of light passing through an aperture is given by f / stops. Plus the F-stop more light that passes through the opening. Opening a complete stop of f / double the amount of light the camera. F / 4 is twice the light of f5.6.

By selecting a small or narrow opening (f/16 or more), all or most of the scene is quite strong. It is ideal for landscape photography. Using a small aperture increases depth of field.

By choosing an open or large (f/5.6 or below), you decide what part of your image is sharp. This function is ideal for taking pictures of wildlife, portraits, sports and small objects. Using a large aperture reduces the depth of field. This means that only a small portion of the image is sharp.

The higher the f / number, more means more

There are about twice the depth of field behind the focus of attention, because for her, using a diaphragm.

The selective use of in-depth controls also ordered field. If you focus on a point near the camera offers a shallow and short field. If you focus on one point away from the camera depth of field will be larger.

The focal length of your lens controls the depth of field. A short focal length lens in any environment, greater depth of field.

Having received a good understanding of the depth of field, it is now time to practice. If a landscape scene that you want all areas of the scene to pull Sharp, so you greater depth of field conditions. Open your camera to a setting of f/16 or longer if the global stage left scored.

Wildlife and floral images is only part of the image sharp. An aperture of f / 4 you can with a narrow depth of field and a smaller area of sharpness.

Some lenses can be purchased with a depth of field scale on them. They are very useful for landscape photography where the lens, so that all parts of the image is sharp