Photometric mode

Seconds to understand Peng's small knowledge of strokes, metering mode.

What is metering mode?

1, metering mode: Test the camera's calculation of the brightness of the subject, and adjust the parameters of exposure value.

2. There are four common metering modes: evaluation metering, partial metering, spot metering and central key average metering.

I photometric assessment

1. Evaluation photometry: Also called average photometry, the viewfinder screen is divided into multiple areas, and each area is metered independently, and then the average value is taken.

2. For example, divide the picture into 16 regions, measure the light independently in each region, and then add up 16 exposure value and divide it by 16 to get the average value.

3. Features: The whole picture is photometric. The more segments, the more accurate the photometric result, the softer the whole picture and the smaller the contrast between light and dark.

4. Applicable scenes: team photos, family photos, general scenery photos, etc.

Second, partial measurement.

1, partial metering: a certain area of the picture is measured, and other areas are not measured, which can be understood as a large area of spot measurement.

2. Features: The camera will only measure the range of about 6.2%~ 10% in the center of the viewfinder. In the case of backlight or local illumination, if the contrast between the background and the subject is large (light is large), accurate exposure can be obtained by shooting in this metering mode.

3. Applicable scenes: silhouette, backlit portrait, stage performance, etc.

Third, spot metering

1. Spot metering: 3. 8% metering in the center of the picture, and no metering in other areas. Photometric accuracy is very high, which is commonly used by professional photographers.

2. Features: Spot metering is an advanced metering mode. Because the camera only measures a small part of the central area of the picture, it has quite high accuracy. So a little parameter change can affect the exposure of other parts of the screen, and spot metering is also a metering method that is difficult to master.

3. Applicable scenes: large backlight scenes, studio close-ups, stage shooting, etc. And occasions where there are strict requirements for exposure.

Fourth, the central key average photometry

1, central key average metering: metering will be biased towards the central part of the viewfinder, but it will also take into account the brightness of other parts.

2. Features: It is suitable for shooting scenes with subjects in the center of the picture, such as portraits, buildings, backlit objects with bright backgrounds, and other objects in the center of the picture, because this mode can not only achieve accurate glare in the center of the picture, but also keep some background details.

3. Applicable scenes: portrait photography, documentary photography and street shooting.