About this item Uses high-performance polarizing film free of veiling and with a neutral color effect to ensure no loss of image definition as well as unaltered colors and the lowest possible light loss The polarizing film and the l/4 layer are cemented between absolutely plan parallel glass plates to avoid reflections at the glass/air interface as well as further light losses and scattered light. Both outer surfaces are incredibly smooth and multi-coated to increase light transmission and loss of contrast The black anodized aluminum slim line rotatable mount is so unobtrusive that it does not cause any vignetting even in shots with most wide-angle lenses Mount has front thread for a lens hood and a lens cap. › See more product details