- This handy device quickly clips onto most lenses without the need for sticky hook and loop tape to provide a highly effective diffuser for either built-in or hot-shoe mounted flashguns. Weighing less than 50g including the provided storage case it's small and light enough to be take everywhere. Mounted onto the lens, it's distance from the flashgun ensures maximum effectiveness. Size: 29cm x 27cm approx, packs down to a 13cm circle. A low-cost and extremely useful accessory.