Circular Polarizing

Posted on Saturday, March 17, 2007 in Uncategorized

As circular polarizing filter stops only gain back?

I know that is lost when using a polarizing filter, but if you turn therefore has no effect to make these decisions and return it only acts as a protective or UV filter or has to do with the fact that the filter is active and prevents cowards, no matter if 100% or 0%?

No, the polarizer blocks always some light at each angle. The reason is that most "normal" of randomly polarized light, which means that light waves are randomly oriented in almost every possible direction. light to pass through a polarizer passes all the light going in a certain direction. Lightweight all other directions are not allowed to pass. This means that any angle, there's always a light that is not allowed to pass. According to the specific filter generally will be around two stops of light. This method is relatively constant, the polarizer is oriented to maximum effect, or at least, even if a loss of light a little higher when targeted for maximum effect.

Tiffen Circular Polarizer Filter