Photographing small objects like rings provide their own challenges – you want the ring to have life and textured lighting, but the surface to light is very small, so careful attention to placement of the white plexi sheets is critical.
Here’s the top view of the layout
I find that if I sit between the camera and the subject, in this case the ring, and have my head at roughly the same perspective as the camera, I get a clear idea of what’s going to be seen in terms of lighting on the ring. Power on the modeling light on one of the two lights and play with the angle and distance of the white plexi until you get just the right lighting on the ring. Power down the modeling light, and power on the modeling light on the other light, and do the same. By isolating each light source, you can concentrate on one light at a time.
The broncolor PulsoSpot-4 is used to illuminate the backdrop with a grid pattern provided by a gobo on the light. The backdrop is a fair distance behind the set so it doesn’t get hit by ambient light.
Separate shots are taken of just the ring, just the backdrop, and just the powder interacting with the ring. These are then composited together in post to create the final image.
In the final version, we decided that the background with the pattern didn’t suit the image, so we dropped it and went with a black velvet cloth to get a dark back-drop.
The following shows the final composite: