Classification of SLR lenses (broad sense and narrow sense)

SLR camera is one of the favorite camera types of many photographers and photographers. They have excellent image quality and flexibility, because they allow users to change lenses to meet different shooting needs. In this paper, we will discuss the classification of SLR lenses-broad sense and narrow sense.

First, the generalized SLR lens classification

The generalized SLR lens classification is based on the focal length and purpose of the lens. The following is the detailed information of generalized SLR lens classification.

1. standard lens

The standard lens is one of the most common SLR lenses. Their focal length is usually between 35mm and 50mm, which belongs to multi-purpose lenses and is suitable for shooting portraits, landscapes, streets and other scenes.

2. Wide-angle lens

The focal length of a wide-angle lens is usually less than 35mm, so it can shoot a wider scene, such as urban scenery, architecture, indoor and so on. Wide-angle lenses can also be used to shoot close-up objects, such as flowers and food.

3. telephoto lens

A telephoto lens usually has a focal length greater than 50 mm, and can shoot distant objects, such as wild animals and sports competitions. The telephoto lens can also be used to take portraits, because it can blur the background and make the theme more prominent.

4. Low-power photographic lens

Macro lens is a kind of lens specially used to shoot tiny subjects, such as insects, flowers, jewelry and so on. They have a very short minimum focusing distance and high magnification, and can capture the details of tiny themes.

5. Fisheye lens

Fisheye lens is a kind of lens with a very wide angle of view, which can take 360-degree panoramic photos. They are usually used to take artistic photos, buildings and indoor scenes.

Second, the narrow SLR lens classification

Narrow SLR lens classification is based on the aperture and focal length of the lens. The following is detailed information about the classification of narrow SLR lenses.

1. standard lens

A standard lens is a lens with a fixed focal length, usually with a large aperture, such as f/ 1.4 or f/ 1.8. They are usually used to shoot portraits and scenes in low light.

2. Zoom lens

The focal length of the zoom lens can be adjusted, and subjects with different focal lengths can be photographed without changing the lens. Their apertures are generally relatively small, such as f/3.5 to f/5.6, which are suitable for taking portraits, landscapes and travel photos.

3. Fixed focus lens

A fixed-focus lens is a lens with a fixed focal length, usually with a large aperture, such as f/ 1.2 or f/ 1.8. They are usually used to shoot portraits, art photos and scenes in low light.

4. Super wide-angle lens

Super wide-angle lens has a very short focal length and can shoot a very wide scene. They usually have a small aperture, such as f/2.8 or f/4, which is suitable for shooting buildings, indoors and landscapes.

5. telephoto lens

The telephoto lens has a long focal length and can shoot the subject from a distance. Their aperture is usually very small, such as f/4 to f/5.6, which is suitable for shooting wild animals, sports competitions and portraits.

operation sequence/order

1. Learn about different kinds of SLR lenses and choose the right lens according to your shooting needs.

2. Before buying a lens, know the specifications and performance of the lens and check the evaluation of other photographers.

3. Choose a fixed-focus or zoom lens as required, and appropriate aperture and focal length.

4. Pay attention to the correct setting of aperture and focal length when using the lens, and use the appropriate shutter speed and ISO value.

5. When storing the lens, pay attention to keep the lens clean and dustproof to ensure its long-term use.