GN for 380EX

[Clark]

Anyone know the GN for the 380ex?
I checked Canon's website but couldn't find it.

[Sam]

Flyingpete wrote in another thread that the flash number is the GN with an extra zero. So a 380ex would be GN 38. I have no idea how true this is but that's what I came up with in a search for you.

[PacAce]

Anyone know the GN for the 380ex?
I checked Canon's website but couldn't find it.
It varies depending on the ISO used and the postion the flash head is zoomed to. At ISO 100 with the zoom head set for a 50mm lens, GN is 137.8./42 (ft/m). And with the head in the 105mm position, GN is 190.3/58 (ft/m).

[Clark]

Thanks for the quick response guys.

[PacAce]

It varies depending on the ISO used and the postion the flash head is zoomed to. At ISO 100 with the zoom head set for a 50mm lens, GN is 137.8./42 (ft/m). And with the head in the 105mm position, GN is 190.3/58 (ft/m).
Oops! :o Just noticed that Clark was asking about the 380EX and not the 580EX! Sorry, Clark, I gave you the wrong specs.

Here's what you were really asking for:

GN (meters) for 380EX @ ISO 100
Flash Coverage..............24 28 35 50 70 105
Normal (full) Output (G.N.) 21 23 28 31 33 38