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Canon Extender lenses version 3

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    Canon Extender lenses version 3

    Tried using my Canon 1.4 v3 extender with my 5Dmk3 and Tamron 150-600g2 lens. Camera thought is was 1200mm and altered f stop from f8>f13. Are the extender compatible with third party lenses?
    Regards

    John Tilly


    EOS 5DMk4; EOS 5Dmk3; EF L 500mm Mk2; EF L 18-105mm; EF L 70-200mm Mk2; EF L 100-400mm Mk2; EF L Macro 100mm; EF 28-200mm; Tamron G2 150-600mm; 1.4x/2x Mk3 Converters: http://www.tillyweb.biz

    #2
    Re: Canon Extender lenses version 3

    I've used my 1.4 III with my Sigma 150-600 (on 5D3) and it worked OK. Centre point only and little slow to focus.
    Canon 5D3, 7D2, 60D, Canon 70-200L f2.8 IS II, Canon 300 f4L IS, Canon 16-35 f4 L, Canon 24-105mm f/4L IS USM, Canon 1.4 MkIII extender, Sigma AF 10-20mm f/3.5 EX DC HSM, Sigma 150-600 Contemporary, Tamron SP AF 70-300 F/4-5.6 Di VC USD, Canon EF-S 18-55mm 1:3.5-5.6 IS
    https://www.flickr.com/photos/16830751@N03/

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      #3
      Re: Canon Extender lenses version 3

      something wrong there john ,i have used a tele-convertor various brands on quite a few different bodies that will a/f at f8 and coupled to my sigma 150-600 sport ,with all of them the base F stop number usually changes to F9 which you can then increase if needed.
      so if your camera is registering f.13 then i would suggest its to do with your camera settings

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        #4
        Re: Canon Extender lenses version 3

        I think I may know what's wrong

        Special Note About the 5D Mark III

        When this camera was first launched, it did not provide AF at f/8. This ability was added in a firmware update in April 2013, when the firmware was bumped up to V 1.2.1. If you have a 5D Mark III that does not appear to be working for AF at f/8, perhaps you have not got the firmware up to date. This is especially possible if you purchased a second-hand camera. Check that firmware number in the menu system!
        from

        Some of Canon's DSLR cameras allow autofocus with lenses with a max f/8 aperture. Here's how to tell which ones.
        Canon 1DX, 50D, EF500 F4.0 L, EF100-400 f/4.5-5.6L I , EF100-400 f/4.5-5.6L II, EF70-200 f/2.8L II, EF180 f3.5L Macro, EF 24-105 f/4L, EF17-40 f/4L, EF2.0X III, EF1.4X III, 430EX II, MR-14EX...

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          #5
          Re: Canon Extender lenses version 3

          Originally posted by TonyT View Post
          I think I may know what's wrong



          from

          http://shuttermuse.com/canon-cameras...s-f8-aperture/
          Thanks Tony - Have version 1.3.4 - registers correctly for Canon lenses but not Tamron. Going to have another try shortly.
          Regards

          John Tilly


          EOS 5DMk4; EOS 5Dmk3; EF L 500mm Mk2; EF L 18-105mm; EF L 70-200mm Mk2; EF L 100-400mm Mk2; EF L Macro 100mm; EF 28-200mm; Tamron G2 150-600mm; 1.4x/2x Mk3 Converters: http://www.tillyweb.biz

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