Dunno if it was on topic for Opposites or not, but it is a super abstract and great way to show off the various properties of glass and (gasp? could that be olive oil?
Interesting take on the challenge. I'm curious as to what you used to hold the marbles and what reflective surface you used. I'm thinking a mirror would have really offered the best reflection. Not a bad shot but a different cropping and angle might really make it a great shot. A 4
I like this photo from a technical standpoint, but the light seems "off" on it. Some white balance adjustment might help compensate for the artificial light.
Nice composition, lighting and exposure seem good. It's a little too blue for my taste, even the reflections of the lights you used have a blue tint to them. 5