What is the function of the four-leaf light shield used in the studio flash? Is it necessary to use it if it is still life (product advertisement) shooting and does not involve models?

1. These light control devices are not used to shoot people or still life.

The four blades play a certain role in concentrating light. Honeycomb can achieve the effect of nearly parallel light. Different beehives have different effects, and the thicker and denser the beehives, the better the parallel light effect.

There are more light control devices used to shoot still life than portraits. Some have to make their own, and four blades are the basic control. If the budget is not a problem, all the above supplies will do. You can see the lighting course of still life photography.