What's the difference between various metering modes?

Central key metering. Partial measurement. Spot photometry

1, different scope of application: central key metering is suitable for personal travel photos, special scenery photos and so on. Partial measurement requires accurate measurement under certain conditions, and the measurement range is larger than that of point measurement. Spot metering is suitable for stage photography, personal art photos, special story photos and so on.

2. The general field is different: central focus metering is the most widely used metering mode, and almost all camera manufacturers regard central focus metering as the default metering mode of cameras. Partial photometry only measures one area in the center of the picture, and the photometric range is about 3% to 12%. The range of spot metering is a small area in the center of the window, and the metering area is 1% to 3%.

Extended data:

Partial photometry is to measure the light of a certain part of the picture. When the contrast between the subject and the background is strong, and the proportion of the subject in the picture is not large, this metering method is most suitable.

In this case, partial metering is more accurate than the first and second metering methods, and unlike spot metering, because the metering point is too narrow to make mistakes, which requires some metering experience. Suitable for shooting purposes: accurate metering is needed under certain conditions, and the metering range is larger than that of spot metering.

References:

Baidu encyclopedia-central key photometry

References:

Baidu encyclopedia-partial measurement

References:

Baidu encyclopedia-spot metering