Y Youhong Senior Member Dec 30, 2004 3,920 0 36 Nov 6, 2007 #1 Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output... How to convert Guide number to Power (watts) ???
Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output... How to convert Guide number to Power (watts) ???
B blazer_workz Senior Member May 8, 2006 3,115 0 36 ClubSNAP Community Nov 6, 2007 #2 Youhong said: Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output... How to convert Guide number to Power (watts) ??? Click to expand... :think:should be somewhere in the manual or spec sheet... but is it necessary? use a light meter..
Youhong said: Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output... How to convert Guide number to Power (watts) ??? Click to expand... :think:should be somewhere in the manual or spec sheet... but is it necessary? use a light meter..
Y Youhong Senior Member Dec 30, 2004 3,920 0 36 Nov 6, 2007 #3 blazer_workz said: :think:should be somewhere in the manual or spec sheet... but is it necessary? use a light meter.. Click to expand... You buy me one light meter lor... :kok: It is useful to know the maths behind yah... For example, SB-800 guide number is 38 at 35mm zoom head, I want to find out how many watts equivalent it is compared to a strobe...
blazer_workz said: :think:should be somewhere in the manual or spec sheet... but is it necessary? use a light meter.. Click to expand... You buy me one light meter lor... :kok: It is useful to know the maths behind yah... For example, SB-800 guide number is 38 at 35mm zoom head, I want to find out how many watts equivalent it is compared to a strobe...
L leejay Deregistered Sep 18, 2006 4,622 0 0 Nov 6, 2007 #4 Two articles for your references which may help: http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00AcOr http://photography-on-the.net/forum/showthread.php?t=24733
Two articles for your references which may help: http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00AcOr http://photography-on-the.net/forum/showthread.php?t=24733
B blazer_workz Senior Member May 8, 2006 3,115 0 36 ClubSNAP Community Nov 6, 2007 #5 Youhong said: You buy me one light meter lor... :kok: It is useful to know the maths behind yah... For example, SB-800 guide number is 38 at 35mm zoom head, I want to find out how many watts equivalent it is compared to a strobe... Click to expand... :think: so r u a photographer turned mathematician? :bsmilie:
Youhong said: You buy me one light meter lor... :kok: It is useful to know the maths behind yah... For example, SB-800 guide number is 38 at 35mm zoom head, I want to find out how many watts equivalent it is compared to a strobe... Click to expand... :think: so r u a photographer turned mathematician? :bsmilie:
S Scaglietti New Member Jan 14, 2005 1,541 0 0 Nov 6, 2007 #6 Youhong said: Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output... How to convert Guide number to Power (watts) ??? Click to expand... There should be guide number for studio strobes too. Look in the specs sheet, you should see it there. Ws and guide number are measure of different things. You may not be able to convert directly. BC
Youhong said: Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output... How to convert Guide number to Power (watts) ??? Click to expand... There should be guide number for studio strobes too. Look in the specs sheet, you should see it there. Ws and guide number are measure of different things. You may not be able to convert directly. BC