New 100-400 with a Hoya HMC UV filter at the lake. Shot a water tower quite a distance from me. Image soft. I remember someone here saying this lens doesn't like a uv filter. I took it off and the color of the tower was more accurate and the lettering was much sharper. Made me wish I could take back the heron and egret shots I took with the filter on it. I'll got out tommorow and give it another try. Hate to leave this kind of money unprotected but the hood will just have to do. By the way, I always had the impression Hoya was German made. This filter says Philippines. Guess I was wrong. Do you think a B & W would do any better? Priced one at 160.00. This Hoya was 60.00.