The highest quality gray filter for Cokin system in size XL (X-PRO series) with nanocrystalline coatings. Cokin NUANCES filters are created based on the use of technology of nanocrystalline coatings applied on both sides on tempered mineral glass Schott B 270 ® . This type of glass is known for its high resistance to mechanical damage. In addition, it has a low level of internal...