the lighting an dbalance is superb on the boy, if *his* point of interest is the beaker then I feel that needs to be in focus also. My original perception was that he is looking at something else, not that.
my guess is that you will recieve mixed reviews with this one. Great moment of capture of the joy of experimentation! People will say the background is too busy - without understanding you had no control over that, and that the beaker should be in focus too. I myself am pleased with the moment of capture. 7