Dark glass bottles shot on white background are a challenge. (The largest bottle above is plastic.) The goal is to manipulate a soft subtle reflection on the face of the glass. Backlight was critical to bring out the depth of the bottle without blowing it out. The backlight had to be focused and controlled. We shot 90 products in a range of sizes all light modifiers had to be adjusted for each size and shape.
We used no flash, multiple diffusers, continuous lighting, 100mm 2.8 Canon Macro lens and one softbox.