Before I went on holiday (15th Sept) there was a thread running between people who were trying to get the new 40D with 100-400 to work with 1.4TC by taping the pins.
I am trying, without success, to find the latest reports. I have the 20D, 100-400 + Kenco 1.4 and WAS thinking of upgrading to the 40D.
Can someone kindly sumarise and tell me:-
1. Will the combination work ?
2. If not, will it work with 500mm f4 ?
Sorry to resurrect this but lack of AF or IS will affect my choice.
Hi Dave,
speaking for myself, I've stopped using the Kenko TC with the 40D/100-400mm and haven't really tried overly hard with the Canon 1.4x either while I'm still road-testing the camera.
I think it's fair to say that the Canon does work better than the Kenko, but - last time I tried - I concluded that it's still not as fast or as effective as the Kenko was on the 30D.
I do intend to try again though - I suspect that things will be better now that I've put AF onto the
The 40D should work perfectly with a 1.4x TC and the 500mm f/4. because even losing a stop of light to the TC still leaves you with f/5.6, which is within the camera's operating spec.
I should also point out that some folk have had more luck with their TCs on the 40D/100-400mm than I have - as I recall, "tdodd" on here has had some success.
Thanks Keith.
It will be a great shame if you cannot overcome the problem. Hopefully others will see this question and come up with a solution. When I bought the 20D it was going to be a stop-gap until the 40D but this puts a big ? over it.