When to use evaluation metering and spot metering? thank you

Spot photometry can only accurately measure the light in a small area, and the brightness of the scenery outside the area has no influence on photometry, so the photometry accuracy is very high, and its main purpose is to measure the light in a specific small area in the distance. Mastering this photometry method requires the photographer to have a certain understanding of the point measurement characteristics of the camera used, know how to choose the photometry point with a reflectivity of about 18%, or make exposure compensation for the photometry point with a reflectivity higher or lower than 18% by experience. Spot testing is mainly used by professional photographers or people who know a lot about photography technology. Improper use of spot measurement method will add chaos.

Suitable for shooting purposes: stage photography, personal art photos, special story photos, etc.

Evaluation photometry is the most advanced intelligent photometry method at present, and it is a kind of judgment that simulates the human brain to the uniform or uneven illumination that is often encountered when shooting. Even people who are not familiar with photometry can generally get films with more accurate exposure in this way. This mode is more suitable for photos of big scenes, such as scenery and group photos. The effect is best when shooting scenes with relatively positive light sources and uniform illumination. At present, it has become the most commonly used metering method for many photographers and photographers.

Suitable for shooting purposes: group photos, family photos, general scenery photos, etc.

Of course, it is best to improvise according to your own shooting intention.

It is suggested that you can practice using M mode after you have experience to cultivate your sensitivity to light.