Camera Lens Classification

Camera lens classification, how do novices choose camera lenses

Lens classification: how do novices choose camera lenses?

Fixed focus lenses, zoom lenses, wide-angle lenses, standard lenses , telephoto lens, macro lens, fisheye lens, tilt-shift lens.

1. Fixed focus lenses

Fix focus lenses are those lenses whose focal length cannot be changed, such as 35mm, 50mm, 85mm, etc.

Advantages: The optical design and mechanical structure of the fixed-focus lens are simpler, which can achieve higher picture quality at lower manufacturing costs, a larger aperture and are more lightweight.

Disadvantages: Since it cannot zoom, it means that it cannot change the size of the viewing field. Therefore, fixed-focus lenses are not suitable for working environments that require rapid changes in viewing angle. This is what the so-called zoom basically depends on walking.

2. Zoom lens

A zoom lens refers to a lens whose focal length can be changed within a certain range, such as 12-24mm, 24-70mm, 70-200mm, etc.

Advantages: The viewing field of view is variable, especially suitable for quick captures of active scenes. It is more convenient to take photos of different scenes without changing lenses. One zoom lens is more convenient than multiple fixed-focus lenses. .

Disadvantages: Since the structure of the zoom lens is more complex and the optical path design is more difficult, compared with the fixed focus lens, the price of the zoom lens is higher, the image quality is worse, and the aperture is smaller.

3. Wide-angle lens

The focal length of wide-angle lens is generally 24-35mm. The ultra-wide-angle lens has a wide viewing angle of 14-20mm and a wide field of view. It can cover a wider picture when shooting. Some. A wider lens can capture a wider picture, making it particularly suitable for landscape photography of large scenes.

4. Standard lens

A standard lens refers to a lens with a focal length of 50mm. It provides a field of view of about 50 degrees similar to the human eye, and the perspective of near and far is also the closest. human eye. Since standard focal length lenses are easy to design and manufacture, most of the standard lenses on the market are very light and there are many high-quality and low-cost models. For example, Nikon and Canon have "small spittoons", and it is also easy to make the aperture larger.

5. Telephoto lens

Telephoto lens refers to the ability to bring distant objects closer and has the function of telephoto. The general focal length of a telephoto lens is 55-800MM. The depth of field of the lens is shallower, and due to the narrow angle of view, less environment is brought in when shooting people or objects, so it is easy to highlight the subject. Generally suitable for shooting portraits, stages, animals, sports events, etc.

6. Macro lens

A macro lens is a special lens used for macro photography. It is mainly used to shoot very small objects, such as flowers and insects. The lens set design of a macro lens is optimized for close focus and imaging. The focal length of most macro lenses is larger than that of a standard lens, so it is not completely suitable for general photography. Macro lenses are also the most common special lenses and are mainly used to photograph very small objects, such as flowers, ants and other insects.

7. Fisheye lens

A fisheye lens is a lens with a focal length of 16mm or shorter and a viewing angle close to or equal to 180°. In order to achieve the maximum photographic angle of the lens, the front lens of this photographic lens protrudes forward in a parabolic shape, which is very similar to the eye of a fish, so it is called a fisheye lens. The field of view of a fisheye lens exceeds 180° and is generally It is used to take pictures of the sky, and the image is a circular image.

8. Tilt-shift lens

Tilt-shift lens is a lens that can correct oblique perspective by adjusting the optical axis. It is mainly used in architectural photography. When shooting buildings with a tilt-shift lens, you don’t need to look up or down. You only need to adjust the optical axis to achieve a similar perspective and ensure that the posture of all buildings is perpendicular to the ground. Tilt-shift lenses can tilt and move the lens without moving the camera body.