Color and critical function in a composition!
Rob,
This B&W derivative would stand well among valued B&W images - strong with a sense of a power struggle with imagined forward thrust opposed by the obvious growing block of debris and weeds. We imagine the train perhaps yearns for it's glory days - just a forlorn wish of another abandoned veteran!
Train-ing Wheel - Colour or Black and White what is your taste?
Olympus E-PL1 w/14-42 kit lens (28mm) : f4.7 @ 1/30'th @ 1600 ISO
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But you disclosed the original too! Now we see how much extra dynamics the colors provide in this case! I guess color here, carries a complex of functional tasks for the composition, meaning and impact of your photograph hardly represented so far in the B&W version, that is itself perfectly competent. I'd love to see a much stronger form of this in monochome. I am not sure whether that's possible!!
Asher