Broncolor Additional Diffuser Softbox 30 x 120. The diffuser fabric used in the Broncolor Additional Diffuser Softbox 30x120 is of the highest quality, ensuring that the light emitted is soft, uniform, and free from harsh shadows or hotspots. This creates a flattering and natural-looking illumination, ideal for capturing the beauty and details of your subjects. The diffuser can be easily attached or removed, giving you the flexibility to control the intensity and quality of the light to suit your creative vision