Geedee, you asked for some more rail shots so I got a chance to go out today and take some. Enjoy.
Cheers for that Aaron...aint the Internet a wonderful thing. Here I am, umpteen thousand miles away, having withdrawal symptons and thanks to mate whom I havent yet met, I can get my fill of the Iron Horse right in my front room !
Some very nice pics there, well framed and captured.
Have been thinking a bit about your pics and am going to suggest something you might like to think about. Have alook at getting a 'Polarising' filter for your main lens.
This does two things....one, it helps keep the end of your lens clean and dust free and secondly, I have found that in some lighting conditions, it enhances the colours quite a bit.
Now generally, a polariser will only work in strong sunlight and you have to be be facing the right way to get the best effect (cant for the life of me remember which way it is....numpty !) and all you have to do is to rotate the filter to get the desired effect.
You will have seen that I use this type of filter on a lot of my shots. It does really exentuate blue's but that often makes a piccie, I reckon. The other good thing about it, is that you can keep it attached all the time. It also makes some great shots when you are looking at Perspex / Glass etc.