On several occasions, I have found it useful to hang Source Fours with no barrels in them. At a glance, this appears to produce a circle of light roughly equivalent to that of a Source Four with a 36 barrel, only without the easy ability to shutter, gel, or focus the edge. I don't know exactly, but I'd like to. Are there any specs on the beam and/or field angle of a Source Four devoid of a barrel?
Thanks anyone who knows!
With all respect to whichever of my valued coworkers you might spoke to: "Do not operate the fixtures without a lens installed". As noted above , this is a safety risk. (I'm also assuming a tungsten lamp BUT the safety warning is also included in the Source Four LED User Manuals)