My first impression of your picture is of the very very strong symmetry in it. Congrats on meeting the challenge so well. My second thought is of light - or more accurately the lack of it. It's hard to imagine an airport that isnt well lit but somehow this picture manages to look underexposed and dim. That's a real shame because with more light you'd have picked out the lovely reds and yellows of the figures either side of the escalator.
Your composition is what makes this shot a winner. The balance of those ceiling beams against the escalator and the rails is just right - excellent use of the rule of thirds. Your focus seems just fine too with plenty of depth of field. I see you stopped up to f/8 - I wonder if your camera did that automatically or whether you chose that small aperture deliberately to get the depth of field. I'm going to guess that you did it yourself and that forced you to increase your exposure time up to 1/60th which is about the slowest shutter you can hold with your hands without getting shake. That's probably how you ended up with a slightly underexposed picture. Perhaps you should have moved your camera's ISO rating up to 200 or even 400. On a detailed image like this I doubt the grain of an ISO 400 image would have been visible.
All in all I'm given the impression of a photographer that knows how to use all the buttons on the camera as well as having a keen eye for a good shot. Your composition is great and getting it without any people in-shot was a real bonus - not easy at an airport!
Wow, nice image. Very good place to take this image as well. The only thing is that the bottom of the image seems to be a little bit too dark. Good job though.
Perfect perspective and cropping!! A little bit dark, but at least there is nobody in the picture. This is really excellent.. if you look closely, every possible detail in the upper part is EXACTLY the same on both sides all the way down. 9!! If it were better lit I'd give a 10.