I tested both filters to a EOS 50D with both the Canon EF-S 18-55mm / 3.5-5.6 / IS, as well as with the Canon EF 50mm / 1.4 / USM.
Unfortunately, I realized that behind the läst Hama light reflections on the pictures if you have a light source outside the image center with the picture.
The Hoya Hoya HMC Super UV 58mm filter has far fewer problems with it. In Live View you can see the very slight reflections only recognize when you move the camera.