Question on extension tubes

Discussion in 'Macro, Flowers, Insects, and Greenery' started by Allan, May 31, 2007.

  1. I have no photo(s) to post but thought this might be the place to ask.

    I have a 105 non-vr micro. I want to get farther away from my subject so a 200 micro would be a good choice. However, I have a 70-200 vr zoom and can easily borrow extension tubes.

    Would the zoom and extension tubes be an acceptable substitute?

    Is there a chart that would show the focusing range at 200 for various Kenko extension tubes?

    What would be disadvantages aside from the inconvenience of switching tubes and having a limited focus range?
  2. The 70-200VR works very well with diopters such as the Canon 500D.

    Extension tubes take away too much light. Also, I don't know if there are extension tubes that communicate AF and VR between lens and camera.

  3. Kenko tubes do AF but I am guessing not vr. Thanks for the information.