Excellent. -----Original Message----- From: Wayne Pinkston Sorry, I cannot answer this one. Wayne On Apr 22, 2005, at 8:20 AM, Gregory Fraser wrote: > > : How can I convert a flash guide number to Watts and Lumens ? What > conversion > : formula can I use for this ? > > If you don't mind my asking - why do you want to do the conversion? > > Greg