Traditional Culture Encyclopedia - Photography major - What is a telephoto lens?
What is a telephoto lens?
A telephoto lens has a long focal length, a small viewing angle and a large image on the negative. Therefore, at the same distance, you can take larger images than the standard lens. Suitable for shooting distant objects. Because its depth of field is smaller than the standard lens, it can blur the background more effectively and highlight the focused subject, and the subject is generally far away from the camera, which makes the portrait more realistic in perspective, so people often call the telephoto lens a portrait lens.
The telephoto lens is often used in professional photography because of its long lens barrel, heavy weight, relatively expensive price and small depth of field, and it is difficult to focus in practical use.
When shooting with a long focal length lens, you should generally use a high sensitivity and a fast shutter. For example, when shooting with a 200mm long focal length lens, the shutter speed should be above 1/250 seconds to prevent camera shake when shooting with a hand-held camera. In general, in order to keep the camera stable, it is best to fix the camera on a tripod. Try to find something to help stabilize the camera without a tripod.
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