Canon 1.4x extender

Discussion in 'Beginner Questions' started by David Collins, Sep 15, 2020.

  1. David Collins

    David Collins New Member

    Joined:
    Sep 15, 2020
    Messages:
    5
    Equipment:
    Canon 1200D, Canon 100-400 EF lens, 75-300 canon lens, 18-55 canon lens
    Hi ive just bought a mk2 version of this extender to use with my Canon EF 100-400 lens, on a Canon 1200D. It wont auto focus with the extender fitted, the guy i bought from said he used with his 100-400, no problems
    What am i doing wrong

    David
     
    David Collins, Sep 15, 2020
    #1

  2. Caladina

    Caladina Well-Known Member

    Joined:
    Jan 30, 2020
    Messages:
    1,841
    Equipment:
    Canon M50
    Canon 18-45mm m, Canon 18-150mm m, Canon 55-200mm m, Canon 22mm m, Canon 28mm m macro,
    Sigma 100-400c ef, Sigma 18-35mm art ef,
    7artisans 7.5mm m, Laowa 100mm macro ef, laowa 9mm zeroD m, Vintage M42 Lenses:
    Ashi Super - Takumar 1.8 / 55mm,
    i dont have any exp with the 1.4 i only have a couple of x2's, until someone else comes along with an answer have you checked the obvious stuff like you not knocked the cam or lens into manual focus.
     
    Caladina, Sep 15, 2020
    #2
  3. David Collins

    David Collins New Member

    Joined:
    Sep 15, 2020
    Messages:
    5
    Equipment:
    Canon 1200D, Canon 100-400 EF lens, 75-300 canon lens, 18-55 canon lens
    Yes hi, ive switched all the buttons, with extender off it works fine on autofocus, put it on, only manual
     
    David Collins, Sep 15, 2020
    #3
  4. GDN

    GDN Well-Known Member

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    Location:
    South Island, NZ
    Equipment:
    A little Canon stuff

    Any ideas what model of camera that the seller used it on? Also, do you have the latest firmware installed on your camera?

    Gary
     
    GDN, Sep 15, 2020
    #4
  5. porkphoto

    porkphoto Well-Known Member Site Supporter

    Joined:
    May 9, 2017
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    904
    Location:
    Southern California, USA
    Equipment:
    Cameras 1DmkIII, 1DSmkII, 50d, 7d, 6d, 70d, 5Ds ,90D , R7, R5
    Lens 17-40 f4L, 24-70 f4L IS, 100 f2.8L IS macro, 200 f2.8L, 300 f4L IS, 300 f2.8L, 100-400 f4.5-5.6L IS, 500mm f4L IS
    I believe the 100-400 lens is too slow for the extender. If you're lucky it will work in center focus mode only. Try selecting that option. Let us know how you make out.
     
    porkphoto, Sep 15, 2020
    #5
  6. GDN

    GDN Well-Known Member

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    Location:
    South Island, NZ
    Equipment:
    A little Canon stuff

    My line of thought is that I think that some models will af at f8. But those models would be the more professional ones.

    Gary
     
    GDN, Sep 16, 2020
    #6
  7. johnsey

    johnsey Site Moderator Staff Member Site Supporter

    Joined:
    Apr 21, 2017
    Messages:
    2,257
    Location:
    Fargo, ND
    Equipment:
    5dMk4, 5dsR, 5dMk2, 20D, 70-200 2.8L IS, 100mm 2.8 Macro USM, 50mm 1.4, 85mm 1.8, 17-40mm 4.0L, TS-E 24mm 3.5L II, Rokinon 14mm 2.8; Pixma Pro-100
    HI David, I saw your email. Personally I have not used the extender and that lens combination, but yes the lower end cameras don't really work with AF and the extender. The 5d2 you borrowed is a slight surprise as I expect it would have performed better. An extender will steal a lot of light. I read that some have got their extender to AF by taping over some contacts on their lens, and then it focuses very very slow. I don't recommend this. With such long reach you are probably best off manually focusing anyway.
     
    johnsey, Sep 17, 2020
    #7
  8. kevin davies

    kevin davies Well-Known Member

    Joined:
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    Location:
    wales u.k
    Equipment:
    eos 80D
    i had one for 550d with sigma 100-300 it wouldnt work i returned it
     
    kevin davies, Sep 17, 2020
    #8
  9. Caladina

    Caladina Well-Known Member

    Joined:
    Jan 30, 2020
    Messages:
    1,841
    Equipment:
    Canon M50
    Canon 18-45mm m, Canon 18-150mm m, Canon 55-200mm m, Canon 22mm m, Canon 28mm m macro,
    Sigma 100-400c ef, Sigma 18-35mm art ef,
    7artisans 7.5mm m, Laowa 100mm macro ef, laowa 9mm zeroD m, Vintage M42 Lenses:
    Ashi Super - Takumar 1.8 / 55mm,
    two 2x canon teleconverters between my sigma 100-400c and M50 with 47mm of tube as well.
    that's 2mm of ruler on the 1.6 crop sensor, no cropping straight from jpeg.
    yes it still auto focused, slower but it still worked.
    if i remember i used a 10sec timer to take a shot, also i probably used manual focus on this one, the settlement movement at that mag was crazy.
    thats the setup that the neewer ext tube couldn't handle and snapped.
    i used a 13mm tube to stack the mk iii x2's as you cant stack them directly as the lens elements stick out past the body.

    i need to build a dedicated lens/camera bed and a get 3 axis subject stand to make full use of this set up, now i have the 100mm laowa macro i might be able to make use of that in the equation.

    2mm.jpg
     
    Last edited: Sep 17, 2020
    Caladina, Sep 17, 2020
    #9

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