Traditional Culture Encyclopedia - Photography and portraiture - What kind of camera can shoot 1: 1?
What kind of camera can shoot 1: 1?
The following is the detailed knowledge about macro lens:
Macro lens is a special lens for macro photography (logo is MICRO 1: 1), which is mainly used to shoot very fine objects, such as flowers and insects. In order to focus on the object correctly at a very close distance, the macro lens is usually designed to be longer so that the optical center is as far away from the photosensitive element as possible. At the same time, in the design of lens group, we should also pay attention to the control of close-range deformation and color difference. Most macro lenses have a longer focal length than standard lenses and can be classified as telescope heads. However, the optical design may not be as good as the ordinary telescope head, and it is not completely suitable for general photography.
Macro camera lens is a kind of camera lens for shooting tiny objects or retaking small pictures. This kind of lens has quite high resolution, minimum distortion and aberration, high contrast and good color reproducibility. Macro camera lens has good close-range resolution, which can keep the image quality unchanged in the whole focusing range.
magnifying power
The purpose of macro photography is to show the details of the subject and the subtle parts completely. In macro photography, there is a term that must be recognized, and it is Magnificatlon. Because macro photography is actually like magnification photography, the magnification directly affects the effect of macro photography. Because the magnification is defined by the ratio of the image obtained from the film surface to the size of the object, the magnification is expressed as the ratio. For this reason, magnification is also called "image ratio". ? It is often heard that the camera can shoot1:1; The macro effect of 1: 2, which refers to the magnification of the lens. The value on the left represents the size of the image on the film plane, while the value on the right represents the size of the actual object. When the lens can reach the magnification of 1: 1, the lens can completely project the real size of the object onto the film plane. Let's give a simple example: the area of 135 film is 24 mm x 36 mm. If we use a lens that can completely record the subject with the same area of 24 mm x 36 mm on 135 film, the magnification of this lens is 1: 1. We should remember that the larger the number on the left, the higher the magnification. If the value on the right is greater than the value on the left, the magnification will be smaller.
SLR camera
For SLR digital cameras, the macro shooting ability is determined by the lens. Now almost every lens has macro function, but the macro function they refer to actually refers to the close-up ability of the lens. Generally speaking, the magnification of a lens must reach 1: 2 or even 1: 1 to be called a macro lens. Macro lens is the easiest macro shooting equipment to use, and users can use it immediately without adding any accessories. Generally, the highest resolution and contrast of a lens are displayed when the focus is at infinity, while the macro lens is just the opposite, and its highest resolution and contrast are displayed when the focus is at close range. So if you want to take high-quality macro photos, you must choose a macro lens.
Although the macro lens is usually a lens with a medium focal length, it can actually be a lens with any focal length, including a 50mm macro lens, a 100mm macro lens or a 70- 180mm macro zoom lens. Giving the lens a macro name can only show that the lens can focus on the subject closer than the ordinary lens. Macro lens is very valuable for shooting small objects, such as insects, flowers, stamps and so on.
Macro lenses were originally designed to reproduce flat objects (documents, photos, paintings, etc.). ), and the requirements for the lens are naturally high image reproduction ability and perfect reproduction level. The biggest feature of macro lens is that the imaging surface of the lens is flat at close range, rather than curved like the bottom of a pot like ordinary lens. The purpose of this design is to obtain the same quality of the center and edge images of the photo when recreating documents and paintings. Shooting tiny natural scenery with a macro lens will give people a wonderful visual experience, because people generally can't see microscopic scenes, and the high-definition images that the macro lens itself can get will also give people an image shock.
Macro lens is a kind of special photographic lens with a wide range of uses, which will be used in copying documents, scientific exploration and artistic creation. In recent years, there are more and more kinds of macro lenses, which provide more convenience for our macro photography activities. The macro lenses commonly used in 135 cameras have different specifications such as 50mm, 55mm, 60mm, 85mm, 90mm, 100mm, 105mm, 125mm, 180mm, 200mm, etc. For example, a 50mm to 60mm lens can shoot A4-sized documents on a general remake stage, but if we switch to a 200mm macro lens and shoot under the same conditions, then the camera must be far away from the documents, and a small remake stage can't meet this requirement. And if you want to take a close-up of an insect with a macro lens and don't want to disturb its old people too much, then a macro lens with a long focal length is the best choice. ?
Note that although magnification can also be achieved through close-up collar, close-up leather cavity, close-up lens, rangefinder, inverted collar and other photographic accessories, it is troublesome to operate and the imaging quality is poor, which cannot be compared with macro lens. If the imaging quality is high, it is recommended to use a macro lens.
- Previous article:What should I do if I find intimate photos of my wife with another man?
- Next article:Zhao Jianjun's introduction
- Related articles
- How to use unmanned deep space scanner
- Photography-related: I want to know how the following photography works produce such a blurred effect.
- Lens classification of SLR cameras? Be more specific! Thank you!
- What about the tattoo on Gao Mengyao's body?
- Is there a training class for middle-aged and elderly models in Beijing Concept 98 Fashion Promotion Agency?
- Brief introduction of princess sister's plot
- These are the must-see attractions along the 318 Sichuan-Tibet Line. Friends who want to travel to Tibet by car should read here!
- I have a 5D3, and my wife wants to play photography together and go out to shoot together. What machine suits her? 5D3 or 7D or 60D?
- When did digital photography appear in China?
- Xiao Quan's resume.