Manual for Tamron Adaptall 2x Teleconverter

Discussion in '35mm Cameras' started by Tim, Aug 26, 2006.

  1. Tim

    Tim Guest

    Anyone have a manual for a Tamron Adaptall II 2x SP BBAR MC
    Teleconverter? Model 01F.

    If you have a spare, or can scan it, I'd appreciate having a manual for
    this adapter. Called Tamron yesterday, and they don't have them

    Tim, Aug 26, 2006
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  2. Tim

    Paul Mitchum Guest

    Is there a specific question you have about it? They're pretty
    straightforward pieces of equipment...
    Paul Mitchum, Aug 28, 2006
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  3. Tim

    Tim Guest

    Well, let's see if I can explain it.

    First, it's a bugger-bear to get on and off. Don't know what the
    proper nomenclature for the pieces are, but I'll try:

    There are two protrusions at the front of the lens (same as the
    adapter), that seem to be intended to "catch" a slide on the next
    forward lens in the "chain". The protrusions are on opposite sides of
    the lens, 180 degrees apart. The "catches" on the other lens are only
    about 165 degrees apart. Are these supposed to "lock" each other, or
    not? Mine do, and I have to get a card between the two to seperate the

    Second - there are f/stop markings on the teleconverter (f/2.8 - f/64).
    But there is no laperature on it. So, are these merely used as
    "indicators" of what the forward lens is set to? Or a reduction of the
    attached lens? (since you generally lose about 2 stops of light with a

    Those will do for a start - depending on the answers, I may have a few
    Tim, Aug 28, 2006
  4. Tim

    Paul Mitchum Guest

    The tabs and slots fit together just like on the adaptor. To get them
    apart again, you have to push the little button, just like on the

    I've found it's easiest to deal with Adaptall adaptors and TCs if you
    set the lens aperture to the widest setting before assembly, then move
    the tabs on the adaptor (or TC) to a pretty close position, and then
    carefully put them together.

    Some TCs won't fit on some lenses. For instance, I can't use the 1.4x TC
    on the SP CF 28-80mm; the lens' rear element sticks back too far to fit.
    That's exactly what it is. It shows you the new effective aperture, two
    stops dimmer than the setting on the lens. It's just a convenience. Set
    the aperture on the lens' ring (or in the camera or wherever you
    normally do it).
    Ask away. :)
    Paul Mitchum, Aug 28, 2006
  5. Tim

    Tim Guest

    The tabs and slots fit together just like on the adaptor. To get them
    Which little button? The only button I see releases an internal catch
    on the bayonet lugs internally (actually only one of the lugs). These
    tabs really grab into the slots, and they WON'T come apart without
    putting a stiff, thin card in between the tab and slot to release them.
    I could bend them out, but that seems radical. Quite a tricky
    operation to get off. Putting it on isn't too bad. Is there another
    button I'm missing?

    I'm using this on the 500mm mirror, to get an effective 1000mm. Yes, I
    know that with this setup it'll be about f/16, and it'll need to be a
    REAL BRIGHT day, and still crank the ISO up a tad, but it does make for
    an inexpensive 1000mm lens combo. This 500mm is pretty sharp,
    considering what I paid for the lens and converter on ebay ;o)
    Typical mirror bokeh, and lack of contrast, but not bad, and will have
    to do until I can afford to get a Canon 100-400 IS.
    Tim, Aug 29, 2006
  6. Tim

    Paul Mitchum Guest

    There's a button on the lens, and you press that to remove the adaptor,
    right? So you also press it to remove the TC.

    You shouldn't have to wedge anything between them. You're using the TC
    on a Tamron Adaptall lens, right? It'll only work on a Tamron lens.
    Paul Mitchum, Aug 29, 2006
  7. Tim

    tundrwd Guest

    Yep - got that already, and it unlocks the bayonet lug so you can start
    to turn the lens.

    Yep - once you hit the button you mentioned, and begin taking the TC
    off the lens, it locks tight and won't release at all, unless you do
    something to pry the keys/slots apart. Doesn't appear anything's
    damaged on either lens or TC, but once those "keys'" lock into the
    "slots" (per the manual's description, and BTW - only one key will lock
    into only one slot on the 500mm f/8, they don't exactly line up for
    both), you have to do something to get the lock out of the slot to
    complete removal of the TC from the lens.
    tundrwd, Aug 30, 2006
  8. Tim

    Paul Mitchum Guest

    You should be able to move both tabs on the TC to line up with the slots
    on the lens. Set the lens aperture to the widest setting (smallest
    number). Adjust the tabs on the TC before you put it on the lens. Then
    put the body mount adaptor on the TC.
    Paul Mitchum, Aug 30, 2006
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