Extension tubes

Discussion in 'Photography Equipment & Products' started by KylePeterson, Mar 18, 2009.

  1. KylePeterson

    KylePeterson TPF Noob!

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    Was reading in a book about these extension tubes that help focus close. Anyone use them and recommend them? How much do these take the place of a macro lens?

    What about sizes? 12mm? bigger?

    thanks
    Kyle
     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    They can be a great option for macro photography. Firstly because they don't introduce any glass into the light path...so you don't loose quality. Also, they are cheaper than a true macro lens.

    I haven't compared tubes directly to a good macro lens, but I think that most would prefer an actual macro lens (except for the price).
     
  3. justnuts

    justnuts TPF Noob!

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    I have a set I use with my macro lens and they are great. I have tried them on my 50mm and for things that don't move they are ok but if you are trying to shoot bugs you have a very short working distance. Some people swear by them on a 50mm. I have the kenko set of three that you can use a single or in combinations. Tubes are a cheap way of seeing if macro is for you.
     
  4. Moonlighter

    Moonlighter TPF Noob!

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    interesting device..
     
  5. Mike_E

    Mike_E No longer a newbie, moving up!

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    I use them occasionally. I prefer to use them with an old 70-210mm zoom because you can quickly center the DoF on the subject (after you set the focus) by zooming back and forth so you can use it hand held.

    I don't know of anything that will work with something that's moving fast but I can generally get a shot in good light. The Continuous High setting helps too. ;)
     
  6. KylePeterson

    KylePeterson TPF Noob!

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    If I was only going to get one, which size would you recommend? 12, 24, 36?
     
  7. Mike_E

    Mike_E No longer a newbie, moving up!

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  8. benhasajeep

    benhasajeep TPF Noob!

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    I have a set of Kenko AF extension tubes for my Nikons. I use them with and without a macro lens. There is no glass involved so its purely a mechanical thing, no worries about cheap glass components or things like that.

    Each size can be used seperately or they can be stacked in any combination including all 3 at once. So, having a set has some advantages.

    Need a good firm tripod though. As the closer you focus the steadier you need to keep the camera to avoid shake.
     
  9. xiangji

    xiangji TPF Noob!

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    Anyone have example shots of extension tubes with a canon 50mm 1.8 II?...as I'm thinking about getting extension tubes.
     
  10. Dwig

    Dwig TPF Noob!

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    It depends on what lens you will use on the tubes. The effect of an extension tube of a particular length is proportional to the focal length of the lens. A 12mm tube will have a major effect on the magnification achieved with a wide angle of 18mm or so but little effect on a long 200mm telephoto. In the first case the length of the tube is 66% of the focal length. In the latter, it is only 6%.
     

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