Just about everyone recommends that you use circular for any SLR camera, or any camera with autofocus.
And that just about takes in all digital cameras.
It is difficult to comprehend the explainations of circular polarization but if you want to give it a try, here is a link:
http://www.mat.uc.pt/~rps/photos/filters_uv_pol/#polq2
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I have a Panasonic FZ20 didgital camera and would like to know what type of polarizing filter would be best, circular or linear.

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