mjgreen53 Loc: Christchurch NZ

My last posting was querying the sharpness of the above lens and maybe having to micro adjust to get it sharper. Having tried adjusting without success I have found that the culprit was the circular polarising filter. With it very unsharp images. Without it very sharp images. Just goes to show what a poor quality filter can do to your images.
Now seeing how much you can pay for these filters, is it worth paying a high price or just address the situation in post processing? After all you don't know until you have purchased one, if it is going to be of high enough quality or just going to waste the money you have spent on a quality lens.
Same thing applies, I suppose when it comes to ND filters as well. What brands would you recommend without breaking the bank?

davidrb Loc: Half way there on the 45th Parallel

Filters are like many other items in photography, the price varies among brands and within brands. An expensive B+W filter is different from an inexpensive filter from the same company and priced accordingly. Consider Chevrolet automobiles. Chevy makes expensive models and they make inexpensive models. Same with filters. Don't expect an inexpensive B+W to be as good as a top-line Tiffin. They are not priced the same and will not perform the same. You asked a fair question concerning "How do you know, etc.?" The answer is "from experience and research." Is it worth paying the high price? It's your photograph, how good do you want it to be?

brooklyn-camera I Loc: Brooklyn, NY

http://www.uglyhedgehog.com/t-496748-1.html Take a look...a cheap UV filter is what the HH came up with. Shot in the same arena without filter and had no more problems....

billnourse Loc: Bloomfield, NM

I would recommend 1st-a Breakthrough. 2nd-a B+W Pro. I have and use both. I find that the Breakthrough has a ring that is easier to turn for polarizing.

As far as breaking the bank, it depends on how big your bank is. The Breakthrough in 82mm is 159. The B+W xs-pro Kaesemann is 110. Either of these are very high quality and should solve your problem. It might be noted that the Breakthrough does have a 25 year warranty.

Bill