Ask the studio whether to use spot metering, average metering or central metering.

The light in the studio is relatively uniform, so you can choose different metering methods to shoot different objects.

Spot metering can be used when taking portraits, macro photos and other photos that need to highlight the subject. For example, the face is prominent and the background is dark, which highlights the portrait well.

Center-focused photometry is to calculate the values of the pictures near the center of the picture according to different weighting coefficients as photometric values, with the center having the largest weight and the closer to the edge of the picture, the smaller the weight, so this kind of political photometry is suitable for shooting objects with relatively flat surfaces.