The first and last would be much more powerful compositions if it had greater depth of field...your subjects being out of focus are a little distracting. The square crop on the last one is something I would redo if it were mine, as well. Good water shots though.
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Gear: Canon EOS 50D, 28-135mm f/3.5-5.6, 55-250mm f/4-5.6, 50mm f/1.8, Canon 430EX-II Flash
Galleries: Smugmug Flickr DeviantART