K&F CONCEPT NANO-K Black Mist Filter 82mm K&F CONCEPT 82mm soft focus filter, Black Diffusion 1/4, for unique visual effects. Black Diffusion 1/4 Almost new, but please understand that this is a used item. Please refrain from purchasing if you are looking for a new item or are very particular about condition. - Brand: K&F CONCEPT - Model Name: NANO-K Series Black Diffusion 1/4 - Size: 82mm - Type: Soft focus filter