Help with my polarizer

[learjet035]

I just used my Quantaray Circular Polarizer and had some questions for you all. I did some reading on the use of polarizers in general, the 90 rule... point your finger etc.. the thing I don't understand is how to tell where to set the filter on the lens. It turns in place so I am assuming that you rotate the filter to a certain position, also relative to the sun. The thing is, there are no marking on the thing except the name of the filter on the side. There also was no directions with the filter, so I guess this must be a "known" thing that I don't know. So, my question is where do I rotate the filter for the best result. Here are 2 pics that I took within a few seconds, but I rotated the camera. How can I keep gettn the 1st result? Thanks!!

[robertwgross]

So, my question is where do I rotate the filter for the best result.

We stated this before, and we can state it again. Plus, you just answered your own question.

You rotate the filter to get the best result as viewed in the viewfinder.

You can't just look at the front of the lens or filter and decide anything.

---Bob Gross---

[rent]

the first picture definately shows all the effects of polarization. the sky is darkened (very nicely) and reflection from water is greatly reduced -- you can clearly see the dark corals/seaweed (?) patches in the water.

so you have really kinda answered your own question here. you should rotate the filter so it achieves the polarization effect. with these kinds of shots, it's really easy to tell, just look thru the viewfinder when you rotate the CP and stop where it gives you the desired darken/reflection-reducing effect.

also if you have been taking shots in landscape (horizontally) with your CP set and decides to take a vertical shot, just rotate your CP 90 degrees either way.

-alex

[learjet035]

Thanks Alex for the info, I just wasnt sure as to what was going on with it. Now I know, I appreciate you explaining that to me.