The other day, my friend showed me a screw in type ND filter. Just by turning the filter like you do with CPL, you can have from ND2 to full black. He said he got it from Cathay. I checked with MS Color today. They don't sell it and said this sort of filter is rare.
For those who have used this filter before, would you prefer this over the slot in type?
For those who have used this filter before, would you prefer this over the slot in type?