This is an Ultra Violet absorbing filter that helps overcome the abundance of blue in outdoor photographs. Not really necessary in digital photography as the camera’s white balance system adjusts for the color temperature of the scene. We do use them to protect the camera’s lens from scratching, fingerprints or dirt.
Founder of ehabphotography.com, I love to share my photography experience with the world.My favorite quote:“Life is like a camera. Just focus on what’s important and capture the good times, develop from the negatives and if things don’t work out, just take another shot.”