Promaster 82mm Protection Filter - Pure Light

I was worried about degrading image quality with a protective filter, but this one is so clear I honestly can't tell it's there. It threads on smoothly and gives me peace of mind without affecting sharpness at all.

Finally a filter that doesn't introduce any weird color cast or haze. It threaded on smoothly and the glass is so clear I honestly forget it's there, yet I feel much better leaving the lens unprotected.

I was a bit worried about adding extra glass in front of my lens, but the multi-coating on this filter is so clear I honestly can't tell it's there. It's already saved my front element from a splash of mud on a rainy shoot.