AMD in your train photo, the edges are pretty dark(vignetting)I am guessing the filter must be causing this. I would do some experimentation at wide angles through to tele, with and without the filter/adapter to see where this effect stops. Good stuff all, keep posting...
A good photograph is knowing where to stand.
Rule books are paper, they will not cushion a sudden meeting of stone and metal.
Ernest K. Gann-Fate is the Hunter.
TenD - That was applied by me in PhotoShop! I was playing around trying to learn a few things. Here is the original:
Had the camera a whole 5 days, lens adapter and UV filter only...
Took it as I turned around, we were shooting the bridge (wishing a train would come by) and started to walk away when the train came. I turned and shot quickly and didn't really think it would come out...
Nikon D90 & D5100
Nikon 18-105 VR
Nikon 35mm f/1.8
Nikon 50mm f/1.8
Nikon 55-200 VR
Nikon 70-300 VR f/8 and be there... My Flickr