This is the biggest Rotalux Octa. Very popular among beauty and fashion photographers, as they prefer the round catch light given by this soft box. It's a great folding beauty dish when removing the front and inner diffusers and adding one of the optional deflectors. Another innovative feature which distinguishes Elinchrom soft boxes from others is the lightweight dedicated speed ring, which utilizes knurled, spring-action sockets to connect the four stainless rods which form the frame of the box, to the ring. This allows easy assembly of the box in a de-tensioned state. The user then simply pivots the sockets 90 degrees until they lock into place to tension it for use. The 69" (175 cm) Deep Octa shape features a large surface area which renders a "wrap-around" light quality especially when used at close range. It is ideal portraiture. Shape The 69" (175 cm) Deep Octa shape is ideal for head-and-shoulders portraiture for a group of people, as a hair light for groups or for reflective products and glassware. Quick Setup, Breakdown Lightweight, dedicated speed rings utilize knurled, spring-action sockets to connect the 8 stainless rods which form the frame of the box. Storage Fits assembled but de-tensioned in the included case, ready to set up again in seconds.