Haida is a Chinese optical filters company that was founded in 2007. It currently offers a range of filter types including drop-in filters, square filters, circular magnetic filters and circular screw-on filters.
The Haida PROII CPL-VND 2 in 1 filter is a circular screw-on filter that combines a circular polarizer (CPL) with a variable neutral density filter (VND or variable ND) . That’s a very useful combination because it enables you to cut down on glare and reflections, boost color saturation and extend the exposure time with just one filter. Neutral density and CPL filters are commonly used for videography and landscape photography, and mounting one filter rather than two saves time and hassle.
