Hoya 52mm Warm Tone Linear Polarizing Glass Filter with 85-B

A linear polarizing sheet is sandwiched between one transparent optical glass and one color conversion filter (85B).

Enables tungsten film to be used in daylight and also has the effect of a regular polarizing filter.

Eliminates undesirable reflections from water, windows and non metalic surfaces.

Also serves to darken the sky as well as increasing color saturation in general. Mounted in rotating frame.