Right - sorry that took a while, was without a PC and was expecting to get them a lot sooner too - things became busy. They're a bit rough and ready for the same reasons. Few thoughts on each:
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Image is very soft - mostly because of lack of DoF but maybe also because of camera shake/high ISO smearyness. Loads of options for processing, decent dynamic range in there. Responded well to different colours too - could have gone for dawn or sunset look. Ended up trying to get good pop from all the illuminated windows, but wasn't happy with the way the mid-distanced buildings merge together.
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This one was fun. Found it a struggle to get much real crispness out of the fine detail on the shuttle. Experimented with lifting shuttle out of shadows, but left it disappearing into the blackness in the end. Had a real mess around with the scaling - I didn't like the in-camera crop much and I wanted to emphasise the ascent. It's not particularly successful in this instance, but you can hopefully see what I thought - maybe what I'd have been doing with my own camera if I was there. Great clouds of smoke and fire!
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This was also fun - loads of tones to play with. In the end I went for a really heavily processed, contrasty, aged B&W look - just by pulling sliders all over the place until it looked fun. Made it squarer too.