Photographic standard lens

Ordinary telephoto lenses are standard lenses.

Standard lens, 135 camera, for example, the photographic lens with a focal length of 85mm-300mm is an ordinary telephoto lens, and the lens with a focal length of more than 300mm is an ultra telephoto lens.

The lens has long focal length, small viewing angle and large negative imaging. 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 from the camera, so the perspective deformation of the portrait is very small.

Extended data:

Features of ordinary telephoto lens:

Take the interchangeable lens suitable for 35mm SLR camera as an example. The standard lens usually refers to a photographic lens with a focal length of 40 to 55 mm, which is the most basic photographic lens of all lenses.

The standard lens gives people a vivid visual effect picture, so it is often used in actual shooting. However, on the other hand, the picture effect of standard lens is very similar to human vision.

Therefore, the picture taken with standard lens is very ordinary, even "plain", and it is difficult to obtain the artistic effect of the rendered picture with wide-angle lens or telephoto lens.

So it is not easy to take vivid photos with standard lenses. Even experienced photographers think it is not easy to use standard lenses well.

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