The 39'' Mini Octa expands on its ''big brother'' 74'' Octa Light Banks wrap-around lighting effects, but in a small, portable version. It features a rotating speedring mount for exact angle positioning, spring loaded self-locking struts for fast, easy set-up, and durable snap fasteners to quickly attach the inner diffuser. Like all Elinchrom light modifiers, the geometrics of the Rotalux softboxes are precisely engineered to the focal length and light pattern unique to all Elinchrom flash heads. This feature, along with the ''double diffusion'' design ensures the exceptional evenness and softness Elinchrom softboxes are famous for. (39'' Rotalux Mini Octa, right, shown with 74'' Octa, left, and 53'' Rotalux Junior Octa, center)