Viggo said:
RLPhoto said:
I dont know but A PCB Einstein @ 640 W/s would take atleast 6+ Speelites to get kinda close to the full power output. It would be the same with these if they are measures the same.
Thanks for the tip, but I can't buy Einstein, it's not sold here and I can't import due to importing rules, think it's about the lithium battery, and I think thy used to be only 120V , not 240V.
Not suggesting that you do buy an Einstein, though I recently got two and they are very good. But for the sake of accuracy, the Einstein doesn't have a battery in it and is allowed to be shipped anywhere worldwide with no restrictions (not saying there are not import regulations unrelated to batteries), also they run on any voltage from 95-250VAC 50-60Hz automatically, effectively you can plug them in anywhere in the world and they just work.
But international shipping is a pain and for service or warranty they have to go back to Tennessee and the Einstein also doesn't do HSS.
As for the power output, as IMG_0001 said, the small flash GN only covers a very small area, the Godox has a much wider spread so actually puts out much more light. It is very difficult to compare flash power on specs, even when you use the same figure to do it. For instance if you compare a 1200WS Profoto to an older 2400WS Profoto in the same modifier the 1200 actually gives you one stop deeper dof because it is so much more efficient, WS refers to potential energy.
There is no accurate way of comparing flash output, there is no standard, without firing them next to each other in the same modifier. But the Godox will give you much more light output than the 600-EX-RT.
Addendum: The Godox is rated at GN 52 with a circular beam spread of 65º, the 600-EX-RT is rated at GN60 with a rectangular beam pattern of a 200mm lens, or 12º. This means the area the Godox covers is around eight times bigger. In practice I'd expect the Godox to put out a couple of stops more power than both your 600's together.