Nikon TC Questions re the 3 levers

Discussion in 'Lens Lust' started by Guest-002, Jun 21, 2007.

  1. Guest-002

    Guest-002 Guest

    263
    Jan 14, 2006
    Worcester, MA
    Nikon TC's have three levers. One, on the inside ring controls the lens aperture. There are two additional sliding levers on the outside of the lens that don't appear to do anything. What do they do and are they essential?

    The reason I ask is that I just picked up a used TC-20E an an amazing price that was rated 8/10. There are marks on the body itself, but the glass is clean. The inner lever is nice and loose, but the two levers on the OD are sort of tight. The TC appears to work fine with my D200 and 70-200VR. Should I worry about this? Is there any way to loosen them up? A little WD-40 (just kidding)?
     
  2. fks

    fks

    Apr 30, 2005
    sf bay area
    hi radu-

    those two levers couple the AI from the lens to the body. this will tell the D200 if your aperture is set to the minimum or to some other value if you have the camera set to control the aperture using the lens. they don't have any value on G-lenses.

    as to the tightness, they should be a little tight and not too loose.

    ricky
     
  3. Guest-002

    Guest-002 Guest

    263
    Jan 14, 2006
    Worcester, MA
    Thanks Riky. As I'm only planning on using this with the 70-200, I should be all set. I've got a 300 AFS f/4, which is a D lens, on its way and will be checking it out with this TC-20E, just out of curiousity, to see how the outer levers work.
     
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