Teleobjektiivid

Teleobjektiivid, also known as telephoto lenses, are a type of lens that has a long focal length. This long focal length allows the lens to magnify distant subjects, making them appear closer to the camera. Teleobjektiivid are commonly used in photography for sports, wildlife, and portraiture. They can also be used in astronomy for capturing images of celestial objects.

The primary characteristic of a teleobjektiiv is its focal length, which is measured in millimeters. A longer focal length means a narrower field of view and greater magnification. For example, a 200mm lens will magnify a subject more than a 50mm lens. This magnification can be further increased by attaching a teleconverter, which is a separate lens that multiplies the focal length of the existing lens.

Teleobjektiivid typically have a shallower depth of field compared to wide-angle lenses. This means that only a narrow range of distances will be in sharp focus, while the foreground and background will be blurred. This shallow depth of field can be desirable for isolating a subject and creating a pleasing bokeh effect.

When choosing a teleobjektiiv, photographers consider factors such as focal length, maximum aperture, image stabilization, and autofocus speed. Image stabilization is particularly important for teleobjektiivid, as the magnification can make camera shake more apparent. Autofocus speed is crucial for capturing fast-moving subjects, such as in sports photography.