How Do Linear Polarisers Work?
Posted 05 October 2005 - 10:07 AM
At present I turn my circular polariser to achieve two different effects. How does a Linear Polariser achieve these effects? I assume you don't turn it around.
Are Linear polarisers better than Circular polarisers?
All comments will be greatly appreciated! Luke.
Posted 05 October 2005 - 05:19 PM
Posted 06 October 2005 - 08:55 AM
Here's what Luminous Landscape have to say:
Circular Vs. Linear Polarizers
There are two types of polarizing filters available — linear or circular. Linear polarizers are more effective and less expensive than circular ones. But circular polarizers are needed with just about any camera that has a through-the-lens metering system, or autofocus.
The reason for this is that both of these systems use semi-silvered mirrors to siphon off some of the light coming though the lens. If that light is linearly polarized it renders either the metering or the autofocus ineffective. This means that you're going to have to buy circular polarizers unless you're shooting with a pre-1970's camera, or a view camera.
Posted 07 October 2005 - 08:25 AM
This information is incredibly helpful.
Posted 13 October 2005 - 12:30 PM
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