Digitally Optimised (DG) Filters

The Sigma Ex DG Circular Polarizer Filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. This filter has a wide filter mount to help reduce the likelihood of vignetting when working with wide-angle lenses. It is constructed from optical glass and features Sigma's super multi-layer coating to reduce flare and ghosting while helping to increase overall clarity and contrast.

• Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface
• Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light
• Clears up haze in distant landscapes and provides more saturated, vivid colors
• Strongest effect when used at a 90° from the sun
• Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features
• Wide filter mount minimizes vignetting when used on wide-angle lenses
• Super multi-layer coating helps improve image clarity by reducing flare and ghosting