Annoying Circular Polarizers?
Sep 23, 2011 19:33:02 #
Why do they make circular polarizers that you have to turn to get to the polarizing effects? Why dont they make them where you just put them on and everything is polarized to the maximum? I have never used it as a partial polarizer. I know there is a brand where the polarizer is square... has anybody had any luck with these? I've heard they fall out of the lens carrier? Just looking for some opinions before I buy... thanks!
Sep 23, 2011 20:33:23 #
Big Daddy wrote:
Why do they make circular polarizers that you have to turn to get to the polarizing effects? Why dont they make them where you just put them on and everything is polarized to the maximum? I have never used it as a partial polarizer. I know there is a brand where the polarizer is square... has anybody had any luck with these? I've heard they fall out of the lens carrier? Just looking for some opinions before I buy... thanks!
A circular polarizer is designed the way it is to allow you to adjust it based on the position of the sun relative to your subject.
Sep 23, 2011 20:51:43 #
understand that.. so how do the square ones work.. there is no adjustment.. ?
Sep 23, 2011 20:53:10 #
Big Daddy wrote:
understand that.. so how do the square ones work.. there is no adjustment.. ?
I've never heard of square polarizers. Check this out. http://photo.tutsplus.com/articles/hardware/quick-tip-an-introduction-to-polarizing-filters/
Sep 23, 2011 23:11:12 #
A company called Cokin makes them and they've been around for many years. Its basically a filter holder that takes a square filter (about 4x4") and it mounts on your lense ring just like the regular filters.. was just wondering if anybody has had any good experiences with them. I see them on Ebay all the time too...
Sep 23, 2011 23:40:08 #
I'm familiar with Coking but not that they sold polarizers. I'll need to check into that.
Sep 24, 2011 00:58:21 #
Big Daddy wrote:
A company called Cokin makes them and they've been around for many years. Its basically a filter holder that takes a square filter (about 4x4") and it mounts on your lense ring just like the regular filters.. was just wondering if anybody has had any good experiences with them. I see them on Ebay all the time too...
The polarizers that are made for Cokin filter holders are round, while most, if not all, of the other filters that work with the holders are square or rectangular. I have one, and it goes into a special slot closest to the lens and has serrations on the edge of the filter to allow you to turn it. This allows you to use a polarizer and an additional fliter (or 2) at the same time and lessens the risk of vignetting. I'm not convinced it is a better solution; I've often had better luck using a regular circular polarizer and carefully holding a flat, square or rectangular ND filter in front of the polarizer.
Sep 24, 2011 08:07:23 #
A regular polarizer will screw up your in-camera exposure meter readings (don't ask me why). A circular one will not
Sep 24, 2011 09:34:26 #
Sorry, you'll always have to rotate a polarizer filter for the strongest effect regardless if it's circular or linear. It's a physics thing: http://en.wikipedia.org/wiki/Polarization_(waves)
Sep 24, 2011 09:59:06 #
Big Daddy wrote:
Why do they make circular polarizers that you have to turn to get to the polarizing effects? Why dont they make them where you just put them on and everything is polarized to the maximum? I have never used it as a partial polarizer. I know there is a brand where the polarizer is square... has anybody had any luck with these? I've heard they fall out of the lens carrier? Just looking for some opinions before I buy... thanks!
Linear polarizers interfere with the autofocus of cameras.
G
Sep 24, 2011 14:51:45 #
Circul;ar poarizers are more dependable in my opinion. I have several square polarizers from back in the old days. I have found that with the auto exposures, the square polarizers really wreaks havock with the aoto exposure. The othe thing is with the square polarizer you will be fighting with it to get the right exposure or polarization for rhe image you are attempting to capture. Clouds and skies especially will not yield a desired effect that you may think you are capyuring. just my 2Cents :-)
May God Bless
May God Bless
Sep 24, 2011 16:47:00 #
I just got a circular polarizer for my Nikon. It was fascinating how the view changed depending on how the polarizer was rotated. One peculiar problem arose when I put on my sunglasses and then looked through the viewfinder. Everything looked blue and completly blocked out the subject.
Sep 24, 2011 17:10:17 #
Archangel wrote:
I just got a circular polarizer for my Nikon. It was fascinating how the view changed depending on how the polarizer was rotated. One peculiar problem arose when I put on my sunglasses and then looked through the viewfinder. Everything looked blue and completly blocked out the subject.
My guess is that your sunglasses are polarized as well. I believe that if you take two polarizers and orient them 90 degrees to each other, they will block out all light.
Sep 24, 2011 20:53:08 #
Yooper wrote:
My guess is that your sunglasses are polarized as well. I believe that if you take two polarizers and orient them 90 degrees to each other, they will block out all light.
Archangel wrote:
I just got a circular polarizer for my Nikon. It was fascinating how the view changed depending on how the polarizer was rotated. One peculiar problem arose when I put on my sunglasses and then looked through the viewfinder. Everything looked blue and completly blocked out the subject.
My guess is that your sunglasses are polarized as well. I believe that if you take two polarizers and orient them 90 degrees to each other, they will block out all light.
I did a couple of years ago with two pola filters taking a sunset picture at the beach.
See the two pictures I will add here of which one is with two polas in front and one with just one.
Pic with 2 polas
Pic with 1 pola
Sep 26, 2011 08:53:26 #
MCHUGH
Loc: Jacksonville, Texas
Another reason for adjusting the polarizers keeps you from overdoing it. Once years ago I took a photo of a koi in a koi pond. It was beautifully colored and I totally removed all the surface reflection. You could see the fish OK but It looked strange as if the fish was flying instead of swimming.
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