ProMaster SKU: 6441 | Helix SKU:PR6441
ProMaster Digital HD Circular Polarizing Filters increase color saturation and reduce reflections. The neutral gray HD polarizing material guarantees excellent images while minimizing loss of light.
Constructed with premium Schott optical glass these filters are designed to yield extreme image sharpness. They also feature a precision machined, super slim aluminum frame with anti-reflective matte finish and knurled edges.
Specifications: High light transmission HD polarizing material - transmits up to 25% more light than a standard polarizer
Premium Schott optical glass
Precision machined aluminum ring with matte finish and knurled edges
Super slim 4.5mm effective profile
Filter Size: 67mm
ProMater SKU: 6844 | Helix SKU: PR6844
ProMaster SKU: 7216 | Helix SKU: PR7216
Light rays which are reflected by any surface become polarized and ProMaster Polarizing filters are used to select which light rays enter your camera lens. They allow you to remove unwanted reflections from non-metallic surfaces such as water, glass etc.
They also enable colors to become more saturated and appear clearer, with better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds.
ProMaster polarizers do not affect the overall color balance of a shot.
It is important that you choose the correct version of ProMaster Polarizer for your camera. Many of today's cameras use semi-silvered mirrors or prisms to split the light entering the viewfinder in order to calculate exposure and focusing distance. Polarizing filters can sometimes interact with these items to give unpredictable exposure or focusing. So we recommend that you choose a circular polarizer unless you have a manual focus camera which has no beam splitter.
If you will be using your Polarizing filter on a lens which has a full frame focal length of 28mm or wider, we recommend that you use a ProMaster Digital HD Filter to avoid a possible vignette effect.