Is it better to use 85mm or 50mm for portrait shooting? What length lenses are used in the studio and street shooting?

85 focal length is the golden vision of portrait, Jiao Wai and visual sense are good, so it is more appropriate to shoot portrait with 85 mm.

Studio and street shooting have different shooting habits and styles, so there are many kinds of lenses to choose from.

If you are used to long-distance shooting and don't want to disturb the person being photographed, then a lens with a constant focal length of 70-200 is more suitable. The disadvantage is that it is too heavy, which tests physical fitness.

focal distance

1, fixed focal length: the focal length is fixed and can be divided into two types: aperture and non-aperture.

Aperture: The aperture of the lens can be adjusted. According to the change of ambient light, the aperture should be adjusted accordingly. The aperture can be adjusted manually or automatically. Manual adjustment of aperture is called manual aperture; If the lens comes with a micro-motor to automatically adjust the aperture, it is called automatic aperture.

No aperture: that is, fixed aperture, and its luminous flux is fixed. It is mainly used when the light source is constant or the camera has its own electronic shutter.

2. Zoom: You can adjust the focal length as needed to enlarge or reduce the image of the subject.

Commonly used zoom lenses include six-fold zoom and ten-fold zoom.

Three variable lenses: adjustable focal length, adjustable focal length and adjustable aperture.

Two variable lenses: adjustable focal length, adjustable focal length and automatic aperture.

Extended data:

Lens selection: 24- 105 medium focus zoom lens, no need to run around and compose, just stand in place and manually adjust the focal length, which is convenient. The disadvantage is that the aperture is slightly smaller, and it is more troublesome to operate when a large aperture is needed to improve the shutter speed at night.

50 fixed focus is the standard medium focus fixed focus, suitable for shooting street shots, sketches and the like, and the fixed focus with large aperture, coupled with its own lightweight characteristics, is the best equipment for daily hanging up.

However, it should be noted that the focal length of the truncated fuselage has become 75, which is slightly longer. Therefore, it is a Quan Huafu fuselage, and the header of 50 is suitable; If it is a truncated fuselage, 35mm and 1.8 lenses are better, and the equivalent focal length is 52, which is equivalent to the viewing angle of the nose.

Maintenance of lens

1. Photographers are not allowed to disassemble the lens at will. If there is a problem, they should go to a special maintenance department to repair it. Otherwise, it can't be recovered after disassembly and can't be adjusted accurately. The damage caused by lens will affect the imaging quality of lens.

2. Do not wipe the lens with rough and unclean items.

3. When using the lens brush to brush the lens surface, keep the brush clean, and don't touch the brush with your hands. Wash the bristles with alcohol in time after they are dirty.

4. Don't add lubricating oil to the adjusting ring of the photographic lens at will. So as not to flow into the lens and contaminate the lens surface.

5. When not shooting, adjust the focus ring of the lens to infinity, adjust the aperture to full open, and retract the push-pull zoom ring and macro ring to improve the seismic performance of the lens.

6. When the photographic lens is not used for a long time, it is best to keep it in a glass sealed vessel filled with desiccant or sealed in a plastic bag filled with desiccant.

Baidu encyclopedia: lens