What are some common photographic terms you should know in photography?

Although you are not a professional photographer, maybe you just took some beautiful photos with a SLR, or maybe you are a

What are some common photographic terms you should know in photography?

Although you are not a professional photographer, maybe you just took some beautiful photos with a SLR, or maybe you are a photographer who has not yet started. However, some common terms of SLR photography still need to be understood. Basic knowledge is very important if you want to shoot good works. Here are some common terms in photography for your reference.

Focal length: the distance from the center of the lens to the clear image formed on the film plane and other photosensitive materials. The focal length is usually in mm * * * mm * * (mm * * *), which is usually marked in front of the lens. For example, 27-30mm and 50mm*** are also what we call "standard lenses", which refer to 35mm film and 70mm telephoto lenses.

Color temperature: the data description of the color of light, in k units.

Sensitivity: Sensitivity indicates the sensitivity of the image sensor to light. Sensitivity is expressed by ISO plus a number. The larger the number, the higher the sensitivity, and the more sensitive the image sensor is to light. It should be noted that according to the imaging principle of digital cameras, the higher the sensitivity, the more noise the photos have, and the worse the imaging quality.

Resolution: The photos of digital cameras are arranged by countless "pixels". The so-called "resolution" is the setting of the arrangement of these pixels. The higher the resolution, that is, the more prime numbers drawn by the camera, generally speaking, the clearer the picture.

Pixel: In short, it is the number of photoelectric sensors on CCD/CMOS. The photosensitive element forms a point on the output photo after photosensitive, photoelectric signal conversion, A/D conversion and other steps. If you enlarge the image several times, you will find that these continuous tones are actually composed of many small squares with similar colors, and these small squares are the smallest units that constitute the image.

Macro lens: Macro lens is a special lens for macro photography, mainly used to shoot very fine objects, such as flowers and insects.

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 lenses are divided into ordinary wide-angle lenses and ultra-wide-angle lenses. Wide-angle lens can capture various scenes in photos. The smaller the focal length, the wider the range that can be captured.

Anti-shake function: Anti-shake function can be divided into optical anti-shake and electronic anti-shake. Now the anti-shake function is mainly optical anti-shake. The optical anti-shake function senses tiny displacement through the gyroscope built in the camera or lens, and then moves the lens in the lens or the image sensor of the camera in the opposite direction according to the displacement to offset the influence caused by the displacement. Through this function, the possibility of photo blurring caused by hand shaking can be reduced.

Aperture The larger the aperture, the smaller the F value * * * The more light enters, the brighter the photo will be; At the same time, the depth of field is shallower, which can achieve the effect of blurring the background. The smaller the aperture, the greater the F value * * * The less light, the darker the photo and the clear background, which is suitable for taking panoramic pictures.

The higher the shutter speed, the more suitable it is to shoot moving objects, and it can quickly capture the freeze-frame state of the action; The lower the shutter speed, the more blurred the captured motion, and the dynamic picture can be taken with long exposure.

ISO sensitivity in an environment with sufficient light sources, choose low sensitivity and less noise; Choose high sensitivity in dark environment, but the higher sensitivity will produce noise.

The longer the focal length of the focusing lens, the narrower the viewing angle, the shorter the focal length and the wider the viewing angle.

Shooting mode P block: the camera automatically measures light, and calculates the shutter and aperture value according to the incident light quantity.

A/AV file: aperture priority. Manually select the aperture value and the camera will automatically match the shutter speed.

S/TV block: shutter priority. Manually select the shutter speed, and the camera automatically matches the aperture value.

M gear: full manual mode.