I was planning on getting the Kenko 1.4 because I have a 70-300L and the Canon won't fit on it, but the Kenko will.
I have a 5DIII and 6D. Anyone's experiences with the Kenko?
I'm planning to get the Kenko Teleplus PRO 300 DGX 1.4x AF Teleconverter.
I heard/ read somewhere that the kenko causes the 5d mkiii to freeze and requires a power off and on. I stopped considering kenko atthatmoment.. but i don't remember where i read/ heard that.
Probably in this forum, posted by Mt. Spokane.
I posted this on page 2 of this thread. It has come up in several other threads. The Kenko can freeze the 5DIII so don't buy the Kenko TC.
I bought the Kenko and experienced lockup of my 5D MK III when used with a 100mmL. It turned out that the issue was related to AFMA, and turning off AFMA caused the issue to go away. Since I need a +10 ASFMA on my 100L, it also caused sharp focus to go away.
However, there are apparently only a very few lenses that have the issue, so a buyer needs to decide and research. Some Day, Kenko will come out with yet another firmware version. It won't work on all lenses / bodies either, and some will blame that on Canon for coming out with new lenses and bodies.