Hi there, i was reading about the slave optically function of the Sigma 500SUPer DG
how does that work exactly?
Thanks,
Henry
HenryLow Senior Member 408 posts Joined Oct 2004 Location: Vancouver BC, CANADA! More info | Feb 03, 2005 22:13 | #1 Hi there, i was reading about the slave optically function of the Sigma 500SUPer DG
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Illegally_Alive Member  168 posts Joined Aug 2004 Location: Nomad More info | Feb 03, 2005 22:28 | #2 It has a sensor which triggers the flash when it "sees" another flash. This space is left intentionally blank.
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scottbergerphoto Cream of the Crop  5,429 posts Likes: 1 Joined Jun 2003 Location: Brooklyn, NY, USA More info | Optical Slaves sense the light pulse from another flash and fire the flash they are attached to. The firing is so quick that the camera doesn't notice any delay. This is not compatible with ETTL. If you are going to use this function, the flashes must be in Manual or Auto Thyristor. The pre flash from ETTL will set off the optical slave. One World, One Voice Against Terror,
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ahh icic, thanks for the quick replies.
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