Digitally Optimised (DG) Filters EX DG filters benefit from Sigma's
multi-layer lens coating, developed to counteract the highly reflective
characteristic of image sensors. With older style filters, light would
reflect off the image sensor, bounce off the lens and filter elements
and re-enter the image sensor, creating a ghost image.
The multi-layer coating dramatically reduces this effect. In addition to
this, an optimum, neutral colour balance is ensured, increasing the
white balance accuracy of the digital camera. Wide Multi-Coated Circular
PL It reduces the glare and reflections from glass and water and other
non-metallic surfaces. It deepens blue skies, and saturates the colors.
The Sigma circular PL filter is designed to give best performance with
AF Cameras. The Sigma wide multi coated circular polarizing filter is
very thin, so it does not cause vignetting with wide-angle lenses. You
can monitor the changes at different angles through the viewfinder as
you rotate this filter.
*Please Note: All Sigma Products Are Only Eligible For UK Mainland