Hello y'all. I have a Tamron 1.4x teleconverter that I used back in San Francisco during America's Cup (2011-2013) with some success, then with a 7D. I used that with a 100-400 L IS and later in 2013 with the same 7D with a Tamron 150-600. Soon after the America's Cup ended, the TC refused to cooperate with cameras where it previously functioned [almost] fine. I would always get the dreaded err 1 error message: communications between the camera and lens is faulty. Clean the lens contacts. Done that and nothing changes.....
The reason I am using the Tamron TC is because I could [hopefully] get a canon TC but it will later not work with the Tamron 150-600. So by getting the Tamron TC I can use it with canon lenses and the Tamron 150-600.
I now just got my hands on an used 100-400 L II, and I am still having this communication problem. Both lens and camera contacts was cleaned, and all camera firmware is up to date. I still have this older TC and it still refuses to cooperate NOW with a EOS 80D, a 77D nor with a 5D mkIII. Has anyone ever experienced this problem? I got my hands on another exact same Tamron TC, which I was assured would work, having seen pictures taken with the TC on a FF 6D. Now I have this new Tamron TC looks exactly as the one I have had for years already, and this newest TC also refuses to work on MY cameras!
If you have any ideas on WHY this is happening or any experience with this same Tamron 1.4x teleconverter model 140F-CA, any ideas would be most helpful. If you want to comment, please add what lenses you are using on what camera body, etc. I have already emailed Tamron about this TC and the problems I am experiencing, but haven't heard anything yet.
Today is sunny bright in western NY (WNY) and I am testing the 100-400 L II and the Tamron 150-600 and just discovered that the Tamron TC along without lens coupled gives good data, but displays the error once ANY lens is coupled. Of course I have cleaned the contacts of lenses and cameras, plus looking thru the cameras with the aperture wide-open; same error results.
Any assistance, hints, suggestions would be greatly appreciated!! Thanks in advance!!
UPDATED: I just tried a pancake EF 40mm on the TC mounted on the 80D and it works, but the same action on the TC with the 5DmkIII did NOT work! Also see sometimes when a lens is coupled and before pressing the shutter release - triggering the error msg - all data is present except for the aperture, a prelude to the upcoming display of the error msg. Hoping this new info will help in trouble-shooting the problem!
