The same 400w camera lamp is the same. Why is the brightness different? How to adjust it? The brightness is the same as yesterday!

W is just the power of a light bulb, and the unit of brightness is lumens. Nowadays, the popular LED energy-saving lamps have less power than incandescent lamps, but higher brightness. But since you are a photographic lamp, you have to consider the color temperature. You can't blindly pursue brightness regardless of the color temperature, otherwise the white balance will definitely be disordered.

The brightness was consistent before, but now it is inconsistent. First, there is something wrong with your equipment. Second, there is a power peak problem in each time period, which leads to insufficient power of individual devices, so the brightness is inconsistent. You can stagger the power peaks first to judge. If there is no problem with the equipment, one is to stagger the peak power consumption, and the other is to increase the voltage stabilizing equipment.