> >Do you know any reason why it would be dangerous > >to connect the flash PC socket (or hotshoe middle > >contact with an adaptor) in EOS cameras to the > >remote release connector full-press pin (and > >ground pin)? > >I will never do that, but it can work. > > >The purpose is to trigger the second camera by the > >flash-on information from the first camera. This way > >I could use one flash with two bodies and thus get > >two shots at once. > >I don't think it's the best way to do that. > >You can also build a "Y" cable for the remote socket and fire both cameras >at the same time. You can use a pair of diodes to obtain some isolation. >You only need to be sure that both shutters are open when the flash is >triggered. You can do that conecting the flash to the larger lag-time body >or selecting a smaller shutter time for the flash camera and using second >curtain sync. My friend who will also use this device has two 1Vs so they have the same lag time. That's why I didn't find the double remote release so practical. Using the second curtain sync was also an option but in case where you need fast response time from visual observation to flash triggering and ALSO want to use long shutter speed to use ambient light as well it doesn't work (response time gets too long). > >Perhaps keeping the shutter release half pressed decreases > >the EOS-3 shutter lag? > >Don't know. I found out that if EOS-3 (the slave body in this case) was set to M a 60 msecond pulse from 50E PC connector was enough. If EOS-3 was set e.g. to Av it was not enough (and required pressing the shutter half- way in advance). Thus it seems that the full-press position does the same as the half-press position (activate AE and possible AF) prior to triggering the shutter. > >Any comments? > >I won't do that. I will use a remote release with two cables for the two >bodies. Thanks for encouragement... ;-) Unfortunately my friend also wants to use the camera's own shutter release button. It feels better and also works if you want/need to hand-hold the master camera. I know you can get the half-press and full-press information from remote release socket when the camera shutter release button is pressed (probably it works just by connecting the remote release connectors in two cameras together (at least if they are the same type) so avoiding the remote release switch should be doable. Thanks ! Vesa _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
