55mm Cozo SPOT FILTER OPTICAL GLASS (Soft-Focus/DIFFUSION/obscure area around clear central circle)...screw-in fit E55 with double threaded metal rim so it can be combined with other filters or attachments if required.

Can be used in portraiture (eg with model) or for photographing objects.  

Fits many lenses such as some types of Canon LEICA Minolta etc. USED product in good condition with some slight signs of age (works well).