Teleconverter

Discussion in 'Beginner Questions' started by Pete.c, Jul 7, 2019.

  1. Pete.c

    Pete.c Member

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    Hi all,
    Please could you help me out on what you may think is a stupid question, but its about something I can't get my head around, so pardon my ignorance.
    How much extra distance would a 1.4x teleconverter add to a 150 - 500mm lens.

    Thanks, Pete
     
    Pete.c, Jul 7, 2019
    #1

  2. johnsey

    johnsey Site Moderator Staff Member Site Supporter

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    500x1.4 so your looking at 700mm effectively. Which is why when the discussion of very long zooms cam up I mentioned that a good bridge camera may be a better investment if you need long reach.
     
    johnsey, Jul 7, 2019
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  3. Pete.c

    Pete.c Member

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    Thanks for that johnsey.

    Pete
     
    Pete.c, Jul 7, 2019
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  4. GDN

    GDN Well-Known Member

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    Plus throw in one stop of light that you will loose.

    Gary
     
    GDN, Jul 8, 2019
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  5. Pete.c

    Pete.c Member

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    Thanks all but, I have tried and tried but I can't find a teleconverter that will fit my lens/lenses and NOT lose Auto Fucus, and that's what I require as I will be photographing fast moving things. So I think I will have to skip that Idea.
    Pete
     
    Pete.c, Jul 8, 2019
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  6. GDN

    GDN Well-Known Member

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    I am guessing that your 150-500 mm is something like f5.6 or more. So once you attach a converter you will loose a stop of light. Most camera bodies will only auto focus at f5.6. Some bodies will auto focus at f8, but I think that you will find these are only the more expensive bodies.

    Gary
     
    GDN, Jul 9, 2019
    #6
  7. Pete.c

    Pete.c Member

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    I never have any luck. P. S then lens is 6.3

    Cheers Pete.
     
    Pete.c, Jul 9, 2019
    #7
  8. GDN

    GDN Well-Known Member

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    A couple of questions. What body are you using, and what are you trying to capture where 500 mm is not enough?

    Gary
     
    GDN, Jul 10, 2019
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  9. Pete.c

    Pete.c Member

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    Hi Gary, The body is a canon eos 77D. The things I am shooting are fox, deer ang King Fisher.
    Pete
     
    Pete.c, Jul 10, 2019
    #9

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