Will this work with a Canon 40D?
1030938
Yes, but the equivalent focal length will be 240-960mm, that is an APS-C sensor camera..
1030939
Yes. The 40D accepts type EF lenses; that is what the Tamron 150-600 mm (for Canon) is.
861951
It should work fine on a D40. I've been using it on my D70 have had very good results. It definitely is not built to be used as a lifetime investment, but I have had mine for a few months and haven't had any problems.
1874852
Yes it will. It will work on any camera system but the "C3" portion of its model number indicates that it will also come with the appropriate cable or it to work as a wireless shutter release also on the 40D.
195757
I have one on a Canon EOS 40D. It will not be a perfect match. You'll have to learn to use the camera with the adapter. Lenses will fit, you'll be shooting using manual settings and the adapter lens in front of the camera sensor will reduce image quality slightly.
280275
Im not 100% positive but I don't see why it wouldn't work. I've use it with the T2i and 50d. You might want to check that your camera has a remote receiver. If it does, this remote will probably work. Hope that helps!
748108
It should work fine. I've used mine with the EOS Rebel XTi and the EOS 70D.
1656542
I used it with my30D; 40D; and 5D Mk 11, it works great. I have had it for a few years already. I believe you will love it. The price, you will love.
1454426
I use it with a Canon T2-if you camera has close to that Dimensional footprint it should work fine.
1932780
I've got one on an older D40X. I'm pretty sure it is compatible with the standard D40.
2080761
Yes, this lens will work on a Canon 50D camera. However, it is a manual focus lens only.
1400931
If you can plug in an external mic with your camera it should work. I use it with a canon 60d.
2050316
If the camera in question uses compact flash to start with I don't see why it would work. I did nothing special to prep the camera or memory when I installed it on my EOS 40D.
364757
This works for my 60D and my 70D. I don't know about the 40D but if it works for the 2 I have, it will probably work for the 40D. Here is the link for Canon compatibility. http://shop.usa.canon.com/shop/en/catalog/remote-switch-rs-60e3 Your camera model is not listed.
290381
I don't know positively, but I assume it would. As I said in my review, it is custom-tailored to the Canon EOS cameras. It works seamlessly with my 5D classic, and also did on my 40D before I sold it. There's really nothing to program; just attach, turn on, and shoot! Hope this helps!
109776
I have the Canon 6D and it works great! I don't see why it wouldn't work with any of the other items listed above.
2041283
I don't own a Canon EOS 40D camera, but I believe this lens should work with all Canon EOS camera, 40D included.
961915
I use it with a Canon 60D so I don't see why it wouldn't work with that series! :)