Moose Warm Polarizer filters, an exclusive collaboration between Hoya and respected wildlife photographer and conservationist B. Moose Peterson of Wildlife Research Photography, are a combination of a polarizer and an 81A warming filter.
For many years, polarizers have been used to remove reflections from non-metallic surfaces such as water and glass as well as being used to darken blue skies to increase contrast in scenic photography.
When using a camera with a split beam metering system (a metering system that employs a polarized half mirror) which is most of today's auto focus camera bodies, traditional linear polarizers will cause exposure errors due to their light absorption properties. Circular polarizers yield the same optical effect while not causing exposure problems with modern metering systems
A side effect of both linear and circular polarizes is they "cool down" or make the over-all color balance of a scene slightly bluish. The addition of the 81A glass corrects the color temperature, bringing the scene back to the original 5500K for daylight film's color balance. The 81A glass creates a much more pleasing and warm color balance to the entire scene while the circular polarizer increases color contrast and reduces the effect of atmospheric haze.
Reviewed by 4 customers
I have read so much about this filter, and with a trip coming up next month to Alaska, it became the right time to purchase it. Let's warm the area up!
This worked pretty well for th3 first use. It has good construction and works as advertized. How ever shotting at Mesa Arch last week I had reflection and stay light on some of my photos. efectively runing some of my best photos. I will have to play around with this some more as I was shotting almost directly at the sun rise that morning. But so far I'm satified with it. A reagular polerizer would have been better but New Toy got to try it out.
Good construction. I will have to buy a cooler filter the next time. More blue sky.
good polarization with just enough warming