TOKYO GRAPHER Standard Frame CDF-S 49mm Tokyo Grapher lens filter 49mm I purchased this for the Q2, but I am selling it because I have decided to part with the camera body. The CDF (Cinematic Diffusion Filter) is a filter that adds a subtle softness to the boundaries of light and shadow while maintaining high-resolution depiction. The CDF-S adds a very slight afterglow to the light while maintaining high-resolution depiction, allowing you to naturally enjoy cinematic and analog-like expressions in everyday light. You will notice the difference more and more as you continue to use the S model.