Save it _ _ the shorthand formula of old photography.

Save it, the shorthand formula of old photography

Quan Huafu/field:

According to the size of the photosensitive element, it is divided into: Quan Huafu/half frame. The size of photosensitive element in Quan Huafu is 36*24mm, and the size of half-frame camera is 22.7 *15.5 mm. Different body sizes: Generally, full-frame camera is larger than half-frame camera due to the different sizes of photosensitive element.

Evaluation photometry:

Evaluation photometry is the average measurement of light in the picture, and it is the most intelligent. However, it is not suitable for scenes with large illumination ratio, which will lead to deviation of measurement results, such as large areas of light or dark.

Central key metering:

Center-focused photometry is a traditional photometry mode, which is similar to partial photometry mode, but it also reacts to the surrounding light, so it is suitable for shooting when the subject is in the center position.

Quick shot:

Lens speed refers to the amount of light transmission in a certain period of time. A lens that transmits more light is called a fast lens.

Evaluation photometry:

Evaluation photometry is the most commonly used photometry method, and its photometry logic is to average each area one by one and take the average value as the reasonable exposure value of the whole picture. It is safer for friends who don't know about photometry to choose evaluation photometry.

Noise:

Noise: When the ISO setting is too high, small particles will appear in the photos taken.

Big three yuan:

Big ternary lens refers to the floorboard of three zoom lenses with constant aperture of F2.8. These three lenses are super wide angle, telephoto and standard zoom. Together, it can cover the common focal length from super wide angle to telephoto, so it is called big ternary.

Small ternary:

Small ternary is the floorboard of three zoom lenses, and the maximum constant aperture is F4.

Macro lens:

Macro lens is usually a lens with a medium focal length, but it can actually be a lens with any focal length. Macro lenses are usually expensive and have excellent picture quality, which is especially suitable for shooting insects.

Telephoto lens:

200mm and 300mm telephoto lenses can be used to shoot birds, lotus flowers and moving objects, and those not far away can also "hit". Therefore, this kind of focal length lens is also called telescopic lens or telephoto lens, which is mostly used to shoot distant scenes.

Standard zoom lens:

A standard zoom lens generally refers to a lens that starts at 24mm or 28mm and ends at 70mm, 85 mm, 105 mm and120 mm. ..

White balance:

White balance is an index to describe the white accuracy of the mixed red, green and blue primary colors in the display.

Portrait lens:

A lens with a focal length of 85mm is called a portrait lens, which can have a good background blur effect, a good picture cutting ability, and keep an appropriate "communication" distance from the model. In fact, many focal lengths (55~ 135mm) can be used to take portraits. Of course, taking portraits with a focal length of 85mm will look good, especially close-ups.

Quick shot:

When you take a portrait with a flash, if the flash is too close to the portrait, you will find that your eyes turn red.

Central key photometry

Center focus photometry is to measure the area around 1/3 in the center of the picture. When shooting, the subject is usually placed in the center, which can ensure the correct exposure of the subject and avoid the influence of areas outside the center on the exposure results.

Photometric determination

Photometry measures the brightness of the picture and provides exposure parameters. There are three main measurement modes: evaluation measurement, central key measurement and point measurement.