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I'm looking for an inexpensive cable release for my Canon EOS 40D. However, I plan on upgrading to a 70D somewhat soon. This is why I've been looking for a cable release that is compatible with both the 40D and the 70D. However, I haven't found a single product that lists both camera models in their list of supported cameras. Is the technology/jack for those fundamentally different? Or have I just not been looking in the right places?

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  • \$\begingroup\$ Do they both support infrared release? If yes, would that be an option? \$\endgroup\$
    – MirekE
    Jul 8, 2016 at 15:37
  • \$\begingroup\$ @MirekE I don't think the 40D has that kind of fancy functionality, it's a quite old model \$\endgroup\$
    – MoritzLost
    Jul 8, 2016 at 17:26
  • \$\begingroup\$ I don't know about the 40D, but it was on the Rebel XT, I still have the remote and it works on my 7D as well. \$\endgroup\$
    – Robin
    Jul 8, 2016 at 17:31
  • \$\begingroup\$ Right, it apparently does not have IR sensor. Cheaper and older cameras apparently had it, though... imaging-resource.com/PRODS/E40D/E40DA.HTM \$\endgroup\$
    – MirekE
    Jul 8, 2016 at 17:42

2 Answers 2

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The 40D cable remote uses what Canon calls the N3 connector, whereas the 70D uses the E3 connector. The E3 connector is just Canon's name for the subminiature 3/32" (2.5mm) 3-conductor TRS audio connector.

The N3 connector is just a 3-conductor connector as well (but I believe it is proprietary and only used by Canon).

  • If you have a cable release for the 70D, you can get a simple E3F-N3M adapter to use the cable on your 40D.

  • If you have a cable release for the 40D, you can get a simple N3F-E3M adapter to use the cable on your 70D.

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  • \$\begingroup\$ Are there also adapters that do the opposite? Because for now I'm going to get a cable release with a timer functionality (this one) for my 40D ... \$\endgroup\$
    – MoritzLost
    Jul 8, 2016 at 12:02
  • \$\begingroup\$ Thanks, I have already ordered the cable release above though ^^ Not sure yet when I will get the newer body, and once I do I'll give my 40D back to my father (technically it's his), maybe I'll just give him the cable release as well and get a newer one instead. I wanted a simpler one anyway \$\endgroup\$
    – MoritzLost
    Jul 8, 2016 at 12:14
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They're physically different.

The 70D is the audio-jack style connector, while the 40D has the square, stubby connector (see, I know my technical words!)

Don't buy any of them from the Canon site (far too expensive), buy a 3rd party version from Amazon or similar, just check the reviews.

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