I may have a problem.

Discussion in 'Photography Equipment & Products' started by PhotoriousMe, Oct 5, 2015.

  1. PhotoriousMe

    PhotoriousMe No longer a newbie, moving up!

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    For the first time I put my 14mm Nikon PK-12 extension tube on my D7100 with 85mm Nikon Micro lens. Camera is set to A mode. Info screen and viewfinder screen both show an F stop of 0 and will not allow me to change it. Am I missing something here?

    Dave


     
  2. Wizard1500

    Wizard1500 No longer a newbie, moving up!

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    I may be wrong, but I thought extension tubes/rings are for use on non--CPU lenses. Like I said, I may be wrong.....
     
  3. PhotoriousMe

    PhotoriousMe No longer a newbie, moving up!

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    You may be right. I don't see any contact points on the PK12 to transfer the information from the lens to the camera. I think I purchased the wrong tube. I guess I could use it in full manual mode.

    Dave
     
  4. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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    Yeah extension tubes without any metal contacts tend to be very cheap but for any lens controlled by electronics they are a pain as, as you've found, you lose aperture control. I'm unaware of there being any trick to getting the blades to close to what you want (there is a trick with Canon lenses but far as I'm aware it does not work for Nikon).
     
  5. PhotoriousMe

    PhotoriousMe No longer a newbie, moving up!

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    Yup your right except this was a Nikon tube so wasn't cheap unfortunately. Guess I can send it back.

    Dave
     
  6. waday

    waday Do one thing every day that scares you Supporting Member

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    I use that trick when I reverse my lenses. Even with the trick, it's a pain in the arse.

    If you can send them back and get the 'right' ones, I'd highly suggest it. :smile:
     
  7. Dave442

    Dave442 Been spending a lot of time on here!

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    I mostly see people using the Kenko extension tubes, I think a set of those is around the price of one Nikon extension tube.
     
  8. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Yep, and they allow for full metering, AF and work very well, and are also well built. One of the few exceptions where buying third party is actually better than name-brand.
     
  9. snerd

    snerd Anti-Dentite Supporting Member

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    Your website is down.

    Fatal error: Cannot redeclare class WP in D:\inetpub\vhost\johnsphotography.ca\httpdocs\wordpress\wp-includes\class-wp.php on line 8
     
  10. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Thanks!
     

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