guide needed on polarizing filter

[tirediron]

Thanks TI, that was helpful.


Just to clarrify some points. Sorry for forgetting my geometry but doesn't 90 degrees to the lens axis mean that the sun is directly on the head?

Will it be effective to use it to remove some glare from a car window at noon?

That would be 90 degrees as well, however I mean 90 degrees when viewed from overhead. The CPOL will still help to remove reflections at high noon, but the effect may not be as strong as desired.

Just remember that the best conditions happen when the sun is close to the horizon and coming from the direction of your shoulder when you're pointing the camera at the subject.