What are the applications of point metering, central button metering and matrix metering?

Portrait, close-range multi-purpose point measurement, landscape multi-purpose central focusing, matrix is mostly used in complex light environment. For example, backlight, snow scene, edge regression, large area solid color background.

Matrix photometry;

Matrix photometry mode is to divide the surface into several different areas, calculate the measured exposure value of each area through the program in the machine, and find the most suitable combination of aperture and shutter. Matrix photometry has different names according to different manufacturers. Canon is called evaluation photometry and Meloda is called honeycomb photometry.

Tips: Application Points of Matrix Spectrophotometry

It can be used in conjunction with shooting modes such as P, Av and Tv. And it can be used in forward lighting and semi-reverse lighting shooting environment, which can achieve better metering effect. At present, the matrix metering modes of various manufacturers are quite accurate and can cope with most shooting occasions.

In general, you can take photos with moderate brightness by using matrix photometry.

Central key metering:

Center focus photometry is based on the center of the picture and the average value of other parts of the picture. Different brands and models have different central focus ranges and calculation ratios, so readers can read the instructions themselves.

Tips: Application essentials of central dimming

This mode is provided for advanced photographers, mainly manual exposure shooting mode. Use the central key metering mode, which is suitable for travel sketch or documentary photography, such as street scenes in the sun, still life in the corner or photos of tourist figures.

Spot metering:

Spot metering is based on a certain proportion of the small area in the center of the picture, and the rest, regardless of light and shade, will not affect the metering results. Spot metering is called "partial metering" in some manufacturers, which actually means the same thing. In addition, the measurement percentage of each manufacturer or different models is different, and even some high-end models can set their own weight percentage.

Tip: the application essentials of spot metering

Point (local) photometry is suitable for backlight shooting or extremely complicated scene light. In the case of backlight, if you don't switch to the point (bureau) metering mode, it will often happen that the background exposure is normal and the subject will be underexposed, because the background light is too strong, which leads to the misjudgment of the camera metering system.

Under the backlight, subjects such as portraits and stage shooting can switch the metering mode to point (local) metering.