Review on 📷 Neewer Timer Remote for Canon 50D, 40D, 30D, 20D, 10D, 5D, 1Ds Mark III, 1D Mark III, 1D Mark II N, 1Ds Mark II, 1D, 1V, EOS 3, D2000 - Efficient and Reliable Remote for Canon Cameras by Nathan Jones

All cheap intervalometers like this (no matter what camera their cable is configured for) are copies of the Nikon MC-36, which sells for a lot more. Some of the more expensive copies ($40-$60) are indistinguishable in form and function from the Nikon original, but this Neewer copy is of fairly poor quality. The main trigger is really "sticky" and doesn't move smoothly. It's hard to tell exactly when the shutter will fire when using it as a remote control. Another issue that was a problem for me is that the pre-exposure beeper does not sound. The best copies of the MC-36 I've used all have "beep.beep.beep.(shutter)", which is important if you're shooting time-lapse at sunset or dawn and adjusting the exposure as conditions change change. Pre-shutter beeps alert you to change settings and leave the camera alone for a while to let the vibrations caused by the manipulation subside. They don't have an alarm, so it's easy to get distracted and trigger the camera shutter while you're still setting things up. I ended up buying another generic (but better quality) intervalometer that looks exactly like this one (from the same brand I already have). This Neewer device is now a backup of my backup and I hope I never have to use it again.