The Tiffen 6.6 x 6.6" Bronze Glimmerglass 4 Filter is a dual-function beauty filter: in addition to altering the appearance of the image itself, it also has a sparkling appearance when viewed from the front, inspiring greater confidence in the model. The filter itself imparts a bronze tint to the image and helps to soften skin detail and imperfections. It also produces luminous highlights and a slight reduction in contrast for a more ethereal appearance. Density 4 provides more bronze tint than the 3, but less than the 5. This filter is manufactured using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding it flat to a tolerance of 1/10,000th of an inch. This filter measures 6.6 x 6.6" / 167.6 x 167.6 mm. - Bronze tint brings extra warmth to the image and helps to soften skin detail and imperfections. - Produces luminous highlights and a slight reduction in contrast for a more ethereal image appearance. - Viewed from the subject's perspective, the filter appears to sparkle and helps to inspire confidence in models, which can potentially enhance their performance. Specifications