I just wondered is anybody had done any serious testing. I ordered a mild diffusion, and a slightly stronger diffusion but clear in the center (Hoya DUTO) today to test out as one tool to fight aliasing on the 5D. Anybody experimented with difffusion as a fix for some situations? Not gonna solve every case I know, and there are other options like shallow DOF with the offending objects out of focus, as well as just taking the whole frame slightly out of focus. I was shooting my girlfriend in the kitchen last night doing some testing and the horizontal line from the bottom of the white kiitchen cabinet was just brutal.