Elinchrom Inner Diffusor Rotalux Octa. Fits Deep Octa and Octa 100. The Elinchrom Inner Diffusor for Rotalux Octa is an essential accessory designed to enhance the performance of your lighting setup. Specifically tailored to fit both the Deep Octa and Octa 100 softboxes, this inner diffusor helps to evenly spread light, reducing hotspots and creating a soft, flattering illumination. By attaching this inner layer of diffusion, photographers can achieve more consistent and controlled lighting, mak