HOYA HRT circular polarizer filter

THK announces HOYA HRT circular polarizer filter - Digital cameras, digital camera reviews, photography views and news newsApril 7, 2010 - 10.15 GMT
THK announces a new HOYA HRT circular polarizer filter that uses a newly developed High-Rate Transparency film to pass more visible light through the filter while still filtering the same amount of polarized light.
The HOYA HRT circular polarizer filter transmits as much as 25% more light through the polarizing film giving the photographer about 1/3 stop more light than a standard circular polarizer. The most common use for these circular polarizer filters is to darken bright blue skies in outdoor photography...More