What is wide-angle shooting?

Wide-angle shooting is a shooting method using a camera with a wide-angle lens.

Wide-angle lens is a photographic lens with shorter focal length, larger viewing angle, longer focal length and smaller viewing angle than standard lens. Wide-angle lens can be divided into ordinary wide-angle lens and super wide-angle lens.

A wide-angle lens is the angle of a fan angle from the lowest end to the highest end of the camera illumination range, that is, the angle of the lens, which is actually the illumination range. Generally, the wider the lens angle, the larger the visual range and the smaller the effective visual range.

Extended data:

Wide-angle lens is also called short lens. A photographic auxiliary lens. The focal length of the lens is obviously smaller than the image field diameter (diagonal length of the negative film), which is about 6 ~ 35mm；; The viewing angle is larger than the standard lens, about 53 degrees or more until 220 degrees;

Its relative aperture is usually small. Wide-angle lens came into being after the appearance of fast-straight lens in 1960s. After various evolutions, it has become an important category of photographic lens.

Wide-angle lens is widely used to shoot large-scale landscape photography works, which can increase the sense of spatial depth of photographic images; The depth of field is long, which can ensure that the scene before and after the subject can be clearly reproduced on the screen;

Modern wide-angle lens optical group mainly has two forms: symmetrical structure and back focus structure, and symmetrical wide-angle lens can be divided into two subtypes: positive outer lens and negative outer lens.

The advantages of wide-angle lens are short focal length and large viewing angle. You can shoot a wide range of scenes at close range, and the prospect is more prominent. The range of depth of field is obviously larger than that of standard lens and telephoto lens, and the picture has a strong sense of depth.

Suitable for indoor close-range shooting, shooting mountains, rivers, buildings, crowds and other scenes. The edge of the head field of the old wide-angle lens has the defect of reduced illumination, while the illumination of most image fields of the new wide-angle lens is uniform. When the wide-angle lens is close-up, the foreground is exaggerated and the perspective distortion is serious.

The picture shot with wide-angle lens can highlight the central subject and foreground, and at the same time, it can have a wider background, and can shoot more scenes in a smaller environment, but at the same shooting distance, the scene obtained is smaller than that shot with standard lens.

When shooting close-range, perspective deformation will occur, which will increase the sense of distance between the front and back scenes. Because of its long depth of field, it is easy to shoot close-range and distant view clearly. Generally speaking, lenses with focal lengths of 24 mm and 28 mm are ordinary wide-angle lenses.

It should be noted that the lighting angle of the flash must be larger than the viewing angle of the lens, otherwise the four corners of the photo will be darkened. If the flash is used as a diffuser, the effective light effect of the flash will also be reduced.

Baidu encyclopedia-wide-angle lens

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