Being pretty happy with my TillyTec lights, I gladly obliged when Tilly asked whether I could make some clips showing his lights in action.
The main demo, featuring TillyTec's HID 35 & LED 1000 and starring yours truly, has been on YouTube for about a week now and as of today you can also watch it on TillyTec's own website!
More specifically, the diver being filmed (a.k.a. yours truly) is using a TillyTec HID 35 with flood reflector, and the cameraman (a.k.a. Miguel) is using a TillyTec LED 1000 with diffuser. Whereas a bright focussed beam is better for long-range illumination and signaling, for videography a wider softer beam is preferred in order to avoid any hotspots, which is why both a flood reflector and diffuser were used.
Note that ideally the cameraman would have two bright lights (of at least 100W halogen equivalent), both fitted with flood reflector and diffuser, and the diver being filmed would have one powerful light (of more than 100W halogen equivalent) with or without flood reflector depending on the scene to be recorded.
Embedded here is a 30" demo of TillyTec's LED W30 back-up light:
