I just purchased a Nikon 18-200 VR. I also ordered a 72 to 77mm step up ring with a 77mm B+W UV 010 filter. Should I have gotten the filter with the MRC coating instead? this is what I ordered. http://www.bhphotovideo.com/c/product/11974-REG/B_W_65070156_77mm_UV_Haze_010.html Should I of ordered this? http://www.bhphotovideo.com/c/product/11994-REG/B_W_66070252_77mm_UV_Haze_010.html#goto_itemInfo What are the differences between the 2, and would I notice a difference in picture quality? Also, I just realized that with the step up filter, I wont be able to use the 72mm lens cap that came with the lens .