DUTO + Polaroid Soft "stack"
The DUTO diffusion filter is sold under both the Hoya and Calumet brand names. This one happens to be the Calumet copy. The strength of the DUTO is very mild. By itself, almost an invisible effect. Here I stacked it with the Polaroid Soft to try for a little juicier softening than the Polaroid Soft by itself.
(click on photo again for big view)