guide number ??

[chikeang]

hello
every body ,can any body explane me ,what that mean
GUIDE NUMBER when we talk a bout the flash features?

[BruceW]

chikeang,

It's a measure of the power of the flash.

The following link gives more details:

http://photography-on-the.net/forum/showthread.php?t=11384#55445


Bruce

[chikeang]

thank you
BRUCEW