Really long range camera remote - cybersync and 383 cable

I apologize in advance if this is already common knowledge.

I was fooling around with my Rebel XT and Cybersync last night. I noticed the cable release port on the XT and the male plug on the cable for my Sunpak 383 looked about the same size.

Turns out they are. I now have a remote shutter release for my XT that blows the RC-1 away. You don't even have to put it in "Timer mode". Hitting the test button or firing a shot from the "master" camera immediate releases the shutter on the XT.

This is the cable I'm using: http://www.flashzebra.​com/radiocables/0017.s​html

My 5d has a different port for shutter release, but I'm sure I can find a cable for it.

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Hey Wow...good find I didn't know this, but this will come in handy!

It's actually listed in the cybersync manual that this can be done.

For your 5D you would want:
http://www.flashzebra.​com/shutter_pw/0090.sh​tml