The FocusDiffuser offers a whole new way to modify your softbox. With magnets allowing for easy setup, the FocusDiffuser lets you control light like a grid, but also focus it like a lens—all while keeping your light super soft. Your old-school fabric grid can't multi-task like that! You'll love how simple it is to limit spill and increase the effective output of your softbox by 2 stops (vs. MagBox with Fabric Diffuser).