How to focus the flash with a soft box in the studio?

Take down the soft box that used to be black outside, and then it will be completely naked. The light is hard, and the hive will play a role in gathering light. Generally, it is very simple to take pictures with basically personalized naked lights. The effect is very three-dimensional, that is, the light ratio is relatively large, and the contrast between the two places and the dark place is relatively large.