asking flash distance in GN Mode...


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Dec 6, 2006
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Jb, Malaysia
www.encikb.com
#1
hi...
i m aware about the GN calculation...for optimum result...

GN = Aperture x Distance

and the distance mean 'from camera to subject'
but...are this apply to the distance from the flash to subject...
(situation - subject in 12 o'clock)
(situation - flash in 6 o'clock / 45deg toward subject)
(situation - flash in 9 o'clock)
(situation - reflector in 2 o'clock)
hope this will help..

thank in advance
 

giantcanopy

Senior Member
Feb 11, 2007
6,232
2
0
SG
#3
hi...
i m aware about the GN calculation...for optimum result...

GN = Aperture x Distance

and the distance mean 'from camera to subject'
but...are this apply to the distance from the flash to subject...
(situation - subject in 12 o'clock)
(situation - flash in 6 o'clock / 45deg toward subject)
(situation - flash in 9 o'clock)
(situation - reflector in 2 o'clock)
hope this will help..

thank in advance

It should be distance from flash to subject
U can take it as from the camera to subject since the difference issin that great unless u are using it off shoe.

Since it is a function of the distance of the light from the flash travelling to the subject u need to look at the path taken

E.g if u r bouncing flash off a wall to the person, the distance will logically be longer compared to a directed flash

Ryan
 

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