These filters were originally designed for use with all HD formats, including 1/2", 1/3" and 1/4" chip cameras, without fear of artifacts. Today, they offer an alternative approach to diffusion for larger formats as well.
Schneider-Kreuznach HD Classic Softs produce the same rich In-Focus Diffusion as the standard Classic Soft series. Each one contains a carefully calculated amount of precisely positioned Micro-Lenslets. These provide a controlled soft image that is overlaid on a sharp, in-focus image, creating In-focus Diffusion.
HD Classic Softs impart a closely confined, very subtle glow to highlights. If large amounts of overexposure exist in a scene - like a “blown” window – they produce a stylish glow that keeps the scene’s contrast under control, while adding a romantic look.