Picture This Productions have kindly put up a review of the Bright Tangerine matte box. The very matte box that caused a mini melt down by a few who wanted it then and there at NAB 2012, and Cine Gear Expo 2012. Curt Pair explains that not all matte box’s are the same when it comes to PL mount lenses, and changing out filter trays
Try the Bright Tangerine website for more on the matte box, but good luck getting anything out of it other than a splash page. So maybe hit Picture This Productions up and pick their brains more about the Bright Tangerine matte box.