01-25-2014 05:57 PM
I don't think so, I have a 7D and a after market switch that has the same three prong recepticle as the 80N3 and it will not work in my 70D. However, I don't need a switch since the 70D has built in WIFI and allows me to use my Iphone as the remote switch plus alot more that the remote switch cannot do. It also works well with android smart phones.
01-25-2014 07:38 PM
An adapter is needed.
All of these wired remote releases use 3-conductor wire. On the 70D, the camera uses a 3-conductor jack that resembles a stereo headphone jack. On the RS-80N3, the jack is completely different.
You may want to just get an RS-60E3 since it's fairly inexpensive.
If you were using the Canon TC80N3 remote trigger / intervalometer, then it'd be worth getting the adapter.
The Canon RA-E3 adapter cable has one end that goes into the 70D (most any camera that uses stereo-headphone jack style connector) and the other end has the 3-conductor plug that the RS-80N3 and TC80N3 use.
The "trick" is finding the RA-E3. The only reason I knew this thing existed is because it comes with the Canon 60Da astrophotography camera. But it turns out Canon doesn't normally sell it as an accessory. You actually have to call their parts department -- it's treated more like a replacement part than an accessory cable.