Orcatorch ZD710 Zoomable Dive Light Test

I recently got my hands on the Orcatorch ZD710. This light is interesting in that you can change the focal width by twisting the body. It forces the light head to move closer or further away from the end of the light. This light would work good on my underwater DSLR camera rig as a focus light or video light since it doesn't have any hot spots. www.amazon.com...