I just had my Nikon D80 converted to infrared. Before this I tried an infrared filter on the lens but find it's cumbersome, and if anyone walks into the scene while the lengthy exposure is taking place, it's either ruined or seems like you have ghosts. Apart from that, everything must be perfectly still. Trees moving in a slight breeze will blur because of exposures taking eight to ten seconds. I finally went for the camera conversion so it can now be hand-held and used as normal. Here is my first attempt, a scene at Lewes beach with the Lewes-Cape May ferry coming in. A little bit of post-processing in Corel Paintshop Pro.
Cape May-Lewes ferry - Feb 10, 2013 by
John Henrick, on Flickr