[Recovered Thread: 121132]

[orcaartist]

I only recently bought my Canon 350D, and I'm looking to add to it. In the next week or so, I should be able to afford the Sigma 70-200mm f/2.8 EX DG APO Macro HSM lens which I understand to be a very good lens.

Anyway, my main subjects are animals, and the only ones that I'm fortunate enough to see are usually behind plexiglass. From what I've been told, a polarizer filter helps reduce reflections and glare on the glass and even with water. Is this true? And if so, which filter is good for a reasonable price?

[Bob Nichol]

A circular polarizer is what you need for a DSLR otherwise you may run into autofocus problems if you use a normal polarizer. Hoya Super multi-coated (Super HMC) is a good brand.

Polarizers will help with reflections depending on the light source and angle.

Examples:
http://www.thkphoto.com/products/hoya/gf-04.html
http://www.thkphoto.com/products/hoya/gf-05.html

[orcaartist]

Thanks for the info and links! Those are a great help!

And I couldn't hold out any longer. I went ahead and bought the Sigma lens a few minutes ago. :G

[orcaartist]

Thank you very much for the info. I didn't realize all that about shooting at an angle. It makes a lot of sense, though.

Just to kind of give an example, I took this with my other camera (DiMAGE z2) and you can see what I'm trying to avoid (although I do like this particular one). This one actually was taken at an angle.