Quote Originally Posted by mfohl View Post
Guten Tag Uwe, this is the first I've seen your post. Perhaps you have solved your problem by now. There was a man in the Netherlands who made filters for Horizons. I can't remember his name, but I believe he was very active in the Yahoo Panorama Photography forum. I am at work now, but will look for his name when I get home.

Good luck with your Horizon.

Cheers,

-- Mark
His Name is William J Markerink