Tiffen has introduced a new range of neutral density filters that aim to allow stills photographers to shoot extreme long exposures without incurring the red colour cast that is so common with ND filters. The XLE series comprises three 10-stop ND filters with differing infrared-cut characteristics, ranging from none in the XLE Axent, to moderate in the Advantix and complete IR suppression in the Apex. Learn more
Articles: Digital Photography Review (dpreview.com)