K & F Concept 77mm Slim Fader Variable ND Neutral Density ND2 to ND400 Adjustable Lens Filter for Canon 6D 5D Mark II 5D Mark III Nikon D610 D700 D800 for DSLR Cameras (Electronics)
The part has, depending on the Settings: shutter speed, angle to the sun etc. plentiful cross pattern. Similar pictures and a description can be found at "Tiffen Variable ND Filter Review" For very short Veschlusszeiten it may go, absolutel
