[dvdowns]

Since posting this topic I have learned a bit more . I was using the wrong test subject here and never used the polarizer properly . 81A indeed makes pictures much warmer in normal daylight shooting . The polarize is another story though , because it is a circular polarizer I assumed this meant it was the same effect all the way around and never needed to be rotated . Rotating it has a huge effect on some pictures .. an oil patch would normally have a bright glare reflecting off it , the polarizer turns it into a black patch . A car has light reflecting off the top and sides , rotating the polarizer can either remove reflections from the side or top but not from both because the light is 90 degrees different in reflecting off those surfaces . Why the heck does a circular polarizer need to be rotated ? how is it made ?