Heliopan Zeiss Softars are more than classic soft focus filters. The Softar delivers a lovely diffusion look to the image. Built into the filters are mini-diffusers which create the unique look that Softars are known for. Unlike other brands of diffusers, Softars can be used at any aperture for greater depth of field without changing the softness. This can come in very handy when shooting portraits.
Note: Zeiss Softars may be combined with each other and are available in two strengths: 1 and 2, with 2 having the softer effect