Messages

1

Third Party Manufacturers / Re: 5Dmk3 doesnt play with kenko teleconverters

« on: December 04, 2012, 04:35:13 PM »

What I found I had to do:  With the 40mm (the only microadjusted lens, in my case) on the camera, I turn AFMA to "Disable." (As far as I know, you do not lose registered AFMA values by doing so.)  Then I take a shot with the 40mm and the new setting (disabled AFMA) before turning off the camera and switching to the 300mm+TC.

Taking this extra shot with AFMA disabled seems to be the key. I also tested some more, taking a shot with a lens having +0 adjustment is not enough, you have to set AFMA to Disable. Doing this doesn't lose the registered values.

Now I feel lucky that my tele and macro lenses are fine with +0 .

2

Third Party Manufacturers / Re: 5Dmk3 doesnt play with kenko teleconverters

« on: December 03, 2012, 01:35:31 PM »

I think this was already mentioned somewhere in this forum, but the culprit here is some incompatibility with AF microadjusting. To get the Kenko 1.4x to cooperate with your 5DmkIII, you must first disable AFMA and then *take one picture*. After that you can swap on your TC and everything should work normally – apart from having AFMA. You can also re-enable AFMA immediately as long as your TC+lens combo doesn't actually use it (i.e. has +0 setting).

I tested this with 100L and 200L/2.8 using the "blue dot" TC.