The Fotodiox Optical Diffuser provides a minimum of diffusion and is most commonly used in portraiture; however, it can also be used in landscape photography. The diffuser has very little effect on the sharpness of the image. It merely diffuses highlights and reduces contrast. As such, diffusers can be used to soften a landscape, or soften skin texture in a portrait to hide minor flaws. Each filter comes with a plastic storage box.