Jan, yes Kessler is the best I've found I believe it was your post about them. Nice thing is that when I spoke to them they made a bigger one for ULF cameras. They are more of a movie/film/digital company. What impressed me most is that they listened and then delivered what i asked. We need to take a look at the product line and support them. I'll find the link to the larger head. I took a short break .... 2 more 8x20's to go!