jlafferty wrote in post #18521402
Your Xplor600 plots out at around 512ws, yes? This is great info. I metered the Streaklight 360 (non-TTL) and it was the same or within a tenth of the 310-320ws Alien Bee. So I call it a 300ws light. I assumed the Xplor naming played similar games and had been casually calling it a 500ws light. I like underpromising.
No electrical input power measurements were made (as there's no way to do so). The full power data point for the Xplor is plotted at 600J because that's what the manufacturer claims it is. If you don't trust them, take it apart and count the caps. Your comparison with the B800 is also somewhat meaningless.
What everyone forgets is that the Watt-second (we really should call it Joule) rating of a strobe has NOTHING to do with the amount of light coming out of it. It's a spec that measures the electrical energy stored in the capacitor bank that can be discharged through the flash tube. The efficiency of the path between the power bank and the tube and the luminous efficiency of the tube itself determine how much of that electrical energy is actually converted to photons. Two strobes with identical Joule ratings can have significantly different light outputs if one is, say, an antique cold-war era design and the other is a modern high-efficiency IGBT design. Similarly, you can get identical light output from two different input power ratings if the efficiency of the designs is quite different.
edit: I see. You've got the Lumu, too. Can you provide a link to the Illuminati meter you've purchased? Our needs overlap, and I can only find it as a pre-order Kickstarter kind of thing.
The Illuminati meter was a Kickstarter. It just started shipping to backers this week. I'm hoping I get mine by the end of the year but the holiday may screw that up. I have no idea when they expect to begin normal retail sales.