This may be a silly question but you never learn unless you ask ...
With a manual flash .. is each power increment say from 1/32th , 1/16th , 1/8th , 1/4, 1/2 , 1/1 .. are each of these intervals equivalent to 1 stop ??
This may be a silly question but you never learn unless you ask ...
With a manual flash .. is each power increment say from 1/32th , 1/16th , 1/8th , 1/4, 1/2 , 1/1 .. are each of these intervals equivalent to 1 stop ??
Hi Im Darren
www.darrengrayphotography.com
SONY A850 (FF)] + GRIP | SONY A350 (APS-C) + GRIP | SONY NEX-5 +16 2.8 + 18-55 E-MOUNT LENSES | CZ 85 1.4 | 50 1.4 | 28-75 2.8 | 70-200 2.8 | 2 x 42AMs | 24" imac | LR | CS4 | + loads of other junk
Its 1/3 stops mate (assuming its the same as the canons)
Last edited by Empire; 11-07-2009 at 10:00pm.
Canon EOS 1D III - Canon EOS 5D Mark II - Canon EOS 40D - Canon 10 - 22 mm f/3.5 - 4.5 - Canon 24 - 70mm f/2.8L Canon 24 - 105mm f/4L - Canon 70 - 200mm f/2.8L - Canon 100 - 400mm f/4.5 - 5.6L - Canon 400mm f/2.8L
+ the obligitory sundries
SSoTW #17
No, that is not what is asked, the question is on the light output of the flash not the clicks in your camera. Check the list in the back of the manual of your flash (this one is for the 580EX):
As you can see, power x 2 = guide number x √2. Since guide number = aperture x distance, if you double the power, you gain 1 stop. Or, each time you half the power, you loose one stop. So, yes, each interval on the flash is one stop.
Ciao, Joost
All feedback is highly appreciated!
Last edited by MarkChap; 11-07-2009 at 10:39pm.
Dazza, sorry just got your pm a minute ago. have sent one.
Thanks guys .. thought as much but wanted to be certain.