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#Post#: 59--------------------------------------------------
Info on the YONGNUO Flash Trigger RF-603 From CanonRumors.com
DIR By: jamesz
Date: September 18, 2013, 11:35 pm
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HTML http://www.canonrumors.com/forum/index.php?topic=9102.0
HTML http://www.canonrumors.com/forum/index.php?topic=9102.0
So I just got my Yongnuo RF-603 triggers. They're not bad for
the price but I realized a couple things now that I own it that
I didn't realize before hand. I think I still would of gotten it
but it does show that it designed to be used a specific way and
has some freedom limitations. Anyways, the first thing is it
took me forever to get it working. I put batteries in both
triggers but when I would push the button it wouldn't send a
signal to the other trigger. I tried different channels and
batteries thinking those were the issue. I finally put the
trigger on top of the camera and suddenly everything worked. I
googled around and discovered this is a limitation of this model
is that the transmitter has to be on the hot shoe on a Canon
camera to work. The main thing that stinks about this is it
means I can't use an ettl flash on the hotshoe at the same time
I'm using this trigger I tested to see if the ETTL passed
through but it doesn't (not that I'd really to do that since
there's no locking base on the triggers). The PC port is an
output only so you can't send a signal to the trigger through a
camera's PC Sync port. There's stuff online about putting in a
resistor inside the unit to trick into being a transmitter
always. I don't completely understand what they're doing but my
question is couldn't this be done outside the unit as well? So
have like a hot shoe that you put the trigger on that has that
resistor built into the stand? Then you could just remove the
stand when you didn't want it to be transmitter and then you
could put a pc sync input on it as well so you could activate
the trigger from the pc sync out port.
Another limitation I found and this is more specific to my
setup. But I would like to have a setup where when I take a
picture with my primary camera, the secondary camera takes a
picture as well. I can make this work if I plug the remote
shutter release into both cameras and their respective trigger
but if I use the cameras built in button to take a picture then
the other camera won't take a picture which means I have a very
awkward setup to have to use the button built into the trigger
since once again the 2.5mm output for remote release is output
only not input. I brought this up in another thread and thought
I'd bring it up here as well that I'm wondering what would
prevent you from using the PC sync port to trigger the other
camera to take a picture. I did some testing and the voltage the
trigger is sending out is maybe a volt if that if my meter is
working correctly. The camera itself is sending a higher voltage
than that for the remote release trigger so I don't why that
wouldn't work but then again I'm little eerie of trying it out
with off chance it would take out a circuit board in the camera.
The safest option would be to use a relay or something similar
that upon getting the input voltage it completes the remote
release circuit. By doing this, whenever I take a picture with
the main camera it will send a signal to the second camera to
take a picture as well which is what I want.
Any thoughts anybody?
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