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DPChallenge Forums >> Hardware and Software >> Circular Polarizer question
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 09/25/2006 10:57:26 AM · #1
Hey All,

Ok, I have been using it for about 6 months and do not seeing any difference in the photograph even if I rotate the filter. How do I see the difference of using circular polarizer? I would appreciate if some one can post the same photograph taken by rotating filter.
09/25/2006 10:58:54 AM · #2
For the most effect you need to be taking the shot 90 degrees to the sun. If the sun is directly in front or behind you, you will see no effect.
 09/25/2006 11:00:25 AM · #3
You'll see the strongest difference when you point the camera at a 90 degree angle from the sun on a clear day and rotate the filter. It's also great for minimizing (or emphasizing) reflections on water and glass.

Message edited by author 2006-09-25 11:00:36.
 09/25/2006 11:05:25 AM · #4
Here is an example, you can clearly see the difference:


09/25/2006 11:08:00 AM · #5
Originally posted by scalvert:
You'll see the strongest difference when you point the camera at a 90 degree angle from the sun on a clear day and rotate the filter. It's also great for minimizing (or emphasizing) reflections on water and glass.


ok, but what is the circular, what is the purpose? I can shot it using a Polarizer sunglass...am I wrong or my understanding is wrong..
 09/25/2006 11:13:43 AM · #6
Circular polarizers are used for photography because linear polarizers work TOO well... they cut off the light that a DSLR uses for metering and autofocus. Yes, in a pinch you could use the glass from a pair of polarized sunglasses, but it's not as convenient and may not cover the whole lens.
 09/26/2006 11:36:20 PM · #7


Here are a couple of comparison shots I took with my new polarizer. Works great at removing glare from the water!
 09/26/2006 11:59:55 PM · #8
You see major difference in skies if there are a couple of puffy clouds.
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