New answers tagged polarizer
First we need to clear up a confusion caused by photographers too often not having paid attention in physics class. There are two types of polarization, linear and circular. Linear polarization defines what plane the light is oriented in. It could be horizontal versus vertical, for example. Sky light bouncing off of a horizontal dielectric, like a ...
Putting the ND filter last, or closest to the lens, will cut down on reflections which result in lens flare. Where-ever there is a surface in front of the lens (such as a filter), there is the potential for any small unwanted reflections bouncing from the lens to be reflected back into the lens and form lens flare. Here is an example of the type of lens ...
The polarizer needs to be able to rotate independently of other filters. Square/rectangular system filters only have one other filter type, the graduated/split filters, that needs to be rotated at all. The entire filter holder can be rotated to accommodate the angle required for the split/graduated filter. But what do you do when the horizon (or whatever ...
Polarizer filters are different, but similar to ND filters. ND filters block all light equally, but polarizing filters block light for specific angles of the wave. In combination, the ND filter reduces the overall light equally and the circular can be used to further reduce specific light angles. So, for example, in an extremely bright scene, you might ...
A polarizer filter is also a weak ND filter (roughly 1 stop). So you can just use it to have a little more reduction in brightness in case the ND filter is not sufficient.
I can't think of a technical reason. Other than I would tend to change the ND grad more often than remove the polariser when doing landscapes.
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