So my Fiji water bottle is perfect clarity and clearness when it's by itself (as can be seen by the right most bottle). However when placed in front of a colored back ground and having a blue gradient back side label it basically turns almost black. I think it's the refraction / reflections causing it. Is there a way I can turn those down --or perhaps add a light behind the bottles that only affects the bottles and does not affect or blow out the background?
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Adding an emission light that only emits light in one direction and placed behind the bottles cleared up the issue of black bottles. However that presented the NEW issue of not allowing the backdrop to show through the bottles. As presented here: Emission Light Problem