Emily, Hmmm...! You think IR light or something to do with the focusing system in the camera when in flash mode may be seen by the slave? Vedddy interesting. This kind of brings up another subject - do some cameras have trouble focusing through glass? Like through windows or shooting framed art? AZ Build a 120/35mm Lookaround! The Lookaround E-Book 5ed. NOW SHIPPING http://www.panoramacamera.us > -------- Original Message -------- > Subject: [SPAM] Re: Slave flash on P&S digicam? > From: "Emily L. Ferguson" <elf@xxxxxxxxxxxxxxxxxx> > Date: Sun, February 15, 2009 10:19 am > To: List for Photo/Imaging Educators - Professionals - Students > <photoforum@xxxxxxxxxxxxxxxxxx> > My understanding is that the slave flash goes off too soon, is > triggered by the pre-flash for either red-eye reduction, or > auto-focus calculations or flash power calculations or all of those. > It seems one must be able to squelch all preliminary light emitting > operations from the camera in order to get the external flash to be > triggered by the on-camera one. > I've tried black tape over those things and even that doesn't > completely eliminate the problem. My little peanut sensors are > really efficient... > -- > Emily L. Ferguson > mailto:elf@xxxxxxxxxxxxxxxxxx > 508-563-6822 > New England landscapes, wooden boats and races > http://www.landsedgephoto.com > http://e-and-s.instaproofs.com/
