One of the common problems you’ll run into while using a wide-angle lens with a polarizer is a partly washed out sky. The photo on the left illustrates this ugly problem.
It happens because the polarizer works better on some parts of the sky than others. And, since you’re capturing such a wide part of the sky with a wide-angle lens, you’re almost always going to run into this problem.
Sure, you could avoid this problem all together by not using a polarizer on a wide-angle lens, but then you wouldn’t be able to take advantage of the other great benefits of the polarizer: reducing unwanted reflections, and saturating colors. [Read more…] about How to Fix a Washed Out Sky In Photoshop