An unusual question about Olympus extension tube.

Discussion in 'Olympus' started by ., Apr 22, 2009.

  1. .

    . Guest

    I use Olympus E-510 and E-520 bodies with various lens and am thinking
    about an extension tube for use with my 50mm macro lens.

    Now my problem. My vision is deminished and focus is difficult for me.
    I use auto focus almost exclusively because of this problem. The
    Olympus site says "manual focus recommended" for the extension tube.
    Has anybody here had experiance with this set up that can tell me how
    effective or in-effective the auto focus is with the macro lens?

    Any help will be greatly appreciated.
     
    ., Apr 22, 2009
    #1
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  2. .

    Me Guest

    It seems nobody with this camera(s)/lens combinations will reply.
    I don't expect AF will be very good. With my Nikon D300, AF is quite
    usable down to about 1:2 magnification with a macro lens. Closer than
    that, and it's practically unusable. The macro lens I use won't AF with
    an extension tube, but if I fit the extension tube to a normal lens with
    built in motor, then AF will work, but same as above, unusable at higher
    magnification.
    Since the point of the extension tube is to go even closer, then I don't
    think you will have much luck at all with AF. But the focus
    confirmation indicator in the viewfinder still works for manual focus,
    and if doing slower high magnification work on a tripod, using liveview
    is often the better choice, as 10x magnification of the selected area on
    the rear screen allows perfect critical focus. In fact it's the only
    really useful purpose for liveview that I've yet found so far.
     
    Me, Apr 23, 2009
    #2
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  3. .

    CB Guest

    Without specific experience you have however given me what I think is
    a good view of likely problem I'd have. As you say it is only to get
    closer that I want a tube and almost surely it will not work there.

    Life has limits.

    Thanks.

    Charlie
     
    CB, Apr 23, 2009
    #3
  4. .

    CB Guest

    Not to me, but no need to try explaining I don't think it matters. :)
    Of course. I'll Try that for now. Cheapest way anyhow.

    Thanks,

    Charlie
     
    CB, Apr 24, 2009
    #4
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