Extender EF 1.4 II ?
Dec 19, 2013 17:33:05 #
Went to a camera store today and rented an extender ef-1.4-II hooked it up to my 100x400L on a 7d and no auto focus through the view finder put it on live view and AF works fine,Am I doing something wrong? Thanks Bill.
Dec 19, 2013 19:40:35 #
Probably not. I don't have a 7D, but do have a 5D Mk III. For the 5D Mk III, Canon just recently released a firmware update for the camera to allow the use of center cross-hair AF at F8 when using the 100-400 lens with the 1.4x II extender (as well as the I and III versions). I didn't see a similar firmware update for the 7D.
But, I can't explain why the AF works in live view on your 7D with the 1.4x II extender and the 100-400 lens.
But, I can't explain why the AF works in live view on your 7D with the 1.4x II extender and the 100-400 lens.
Dec 20, 2013 09:27:41 #
jpanar
Loc: Reston, VA
Call Canon support. They're amazing. I was on the phone with them last night and when we were finished, the guy called me back with more alternatives. I have never seen follow-up this good!
Dec 20, 2013 18:58:07 #
guts wrote:
Went to a camera store today and rented an extender ef-1.4-II hooked it up to my 100x400L on a 7d and no auto focus through the view finder put it on live view and AF works fine,Am I doing something wrong? Thanks Bill.
It won't autofocus on the 100-400 used with a 7D. I got mine to work on the 5D III but not the 7D. That's just the way it is. Take a look at the Canon web site for compatibility.
Dec 20, 2013 19:08:45 #
Guts, it won't auto focus. Do a search for" tapping the pins on Canon 100-400". If you tape the pins it will work. My 1.4X is permanently tapped. It works just fine that way. It won't report the 1.4 on the Exif data.
Good luck
SS
Good luck
SS
Dec 22, 2013 16:28:08 #
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