Matej Maceas
(K=24381) - Comment Date 8/28/2004
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A polarizing filter polarizes the light that's passing through it. This can be used to filter off or enhance reflections, darken the sky, etc. Do a search here in the forums, you'll find a lot of threads dealing with polarizers.
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Stephen Bowden
(K=64141) - Comment Date 8/30/2004
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Kieran, imagine a set of polaroid sunglasses in front of your camera lens :-)
If you are looking at a pond with fish then a polarising filter can cut through the surface glare so you can see the fish.
Or maybe walking close to a shop window but cannot see through - again a polarising filter will cut through the glare.
It also brings out a better definition of the clouds on a sunny day.
The most useful polarising filter is called a "Circular polariser".
This attaches (in various diameter screw threads) to the front of your lens but can still be rotated and the amount of polarisation controlled by you !
I have one of these on my camera - it does cut down the light on the cameras sensor by about 1 stop which has negligible difference other than night photography and macro work (but there are exceptions to that rule !!) but it is a good filter to have in your collection.
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Stephen Bowden
(K=64141) - Comment Date 8/30/2004
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Kieran, imagine a set of polaroid sunglasses in front of your camera lens :-)
If you are looking at a pond with fish then a polarising filter can cut through the surface glare so you can see the fish.
Or maybe walking close to a shop window but cannot see through - again a polarising filter will cut through the glare.
It also brings out a better definition of the clouds on a sunny day.
The most useful polarising filter is called a "Circular polariser".
This attaches (in various diameter screw threads) to the front of your lens but can still be rotated and the amount of polarisation controlled by you !
I have one of these on my camera - it does cut down the light on the cameras sensor by about 1 stop which has negligible difference other than night photography and macro work (but there are exceptions to that rule !!) but it is a good filter to have in your collection.
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