Is it necessary to buy yourself an exposure meter to learn photography?

This is necessary if you are going to take your work seriously! Exposure meters are divided into emission meters and reflection meters. One is to measure the illuminance, that is, the ambient light, and the other is to measure the brightness, that is, the reflected light on the surface of the object. According to the function, there are also special flash exposure meters, color temperature meters and so on. The built-in exposure meter of the camera is reflective, which needs to be matched with the standard gray board to adjust the exposure according to experience, and the measurement accuracy is not as good as that of the independent exposure meter.