Tiffen Filters 4X4 BLUE 1 FILTER - 44BL1
The Tiffen 4 x 4" 1 Plum Solid Color Filter adds a warm, pale purple coloration across the entire image and helps to subdue overly yellowish casts. The solid color design makes this filter well-suited to pairing with other filters for further control over the appearance of imagery. The 1 color density provides less plum coloration than the 2 density filter.
This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. It measures 4 x 4" / 101.6 x 101.6mm.