I have just bought a Nikon D200 and two lenses with 77 mm filter rings. Could someone please help me with a few questions regarding matching filters? After reading several of the threads on this forum regarding filters I have decided to buy a Cokin P series filter holder. Could someone confirm that I will not be needing an adapter ring? I can only find this filter holder bundled with filters I don't need/want (on B&H photo). Is it possible to buy just the filter holder anywhere, or do you have to go for one of the bundled kits? I am going to buy Singh-ray GND's instead of Cokin. I am not sure if I should opt for soft or hard though... I see many pictures are taken with hard, but in Norway there are mountains everywhere so I imagine that maybe a soft filter would be more appropraite... Which applications typically call for one or the other? Which do you find yourself using the most? Buying a circular polarizer like the Tiffen 77mm wide-angle seems more convenient than a rectangular one. Does it have greater limitations on use with wide angle lenses though, or do all polarizers work equally bad?