Measurements of light output of electronic flashes

Guide numbers for ISO100 in m
Flashgun and mode/settingsGuide number (m @ ISO100)Notes
Jason's big flash (Albinar 90MDT-Z)
wide 13.5 
normal 14.4 
tele 15.5 
Jason's small flash (Vivitar auto 2600)
9.9 
Jason's digital camera (Canon Powershot G2)
"+2" setting 7.2 
"-2" setting 1.6 
Kara (Vivitar 285)
wide 24.3 
normal 28.8 
tele 34.3 
Kara (Minolta auto 200x)
low and high 16.6 
Ari (Vivitar 285)
wide 23.4 
normal 26.9 
tele 32.0 


URL: Written by Simeon Warner
This page last updated 16 June 2005
td colspan="3">Ari (Vivitar 285) wide 23.4  normal 26.9  tele 32.0 


URL: Written by Simeon Warner
This page last updated 16 June 2005