The Hasselblad Series 60 HSB (Bay 60) Softar III Effect Glass Filter is a special lens with a built-in mini-diffuser lens. It is the optimum in soft focus lenses.
Note:
This filter is specific to lenses with Hasselblad's exclusive Series 60 (Bay 60) filter size
In comparison with other diffusers, the Softars can be used at any aperture for greater depth of field without changing the softness; this is very important in portraiture
Hasselblad Softars may be combined with each other and are available in three strengths: 1, 2 and 3 with 3 having the softest effect