5DIII AF points with EF 70-300mm f/4-5.6 L USM

Started Sep 26, 2012 | Discussions thread
OP Kmccarthy Regular Member • Posts: 184
Re: 5DIII AF points with EF 70-300mm f/4-5.6 L USM

billythek wrote:

The manual explains it in depth. Look in the AF section, where it lists lenses in different groups. If you don't have the manual handy, you can download it.

  • Bill

Thanks! Wow, that is pretty disappointing. There is a huge list of lenses (including the 70-300L) that only supports the center group of 21 cross points. After reading so many great reviews about the 5DIII's AF system (with 61 points, 41 cross type), I had never heard about this limitation. The main reason I got the 5DIII was to avoid having to "focus and recompose" by using accurate outer points. Now I'm reduced to using the center points with one of my favorite lenses. Canon should really be more upfront about this major limitation.

By the way, I dont think I had this issue with my old 7D. All points seemed to work with all lenses.

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