The big the softer! Small softbox useless.
You may argue that you can move it away from the object,then:
1. you need much more power (by square, 2x distance you need 4x power).
2. to keep same angle, you may need very high ceiling
You may argue that you can move it away from the object,then:
1. you need much more power (by square, 2x distance you need 4x power).
2. to keep same angle, you may need very high ceiling