Whats sharpest?

Discussion in '35mm Cameras' started by Thom, Nov 28, 2004.

  1. Thom

    Thom Guest

    Anyone seen any data on whoi makes the sharpist 28-200mm zoom lens in
    the K-mount? Are they as sharp as the 28-80's? (I have a 28-80
    Pentax-A)

    THOM
     
    Thom, Nov 28, 2004
    #1
    1. Advertisements

  2. I thhink it's the one made by Mitsubishi, the one with the 3.4 litre engine.
     
    Uranium Committee, Nov 28, 2004
    #2
    1. Advertisements

  3. Probably not. There doesn't seem to be a good 28-200 on the market;
    apparently optical technology hasn't advanced far enough to do that
    with reasonable size and weight. A better choice might be something
    in the 80-200 or 70-200 range to supplement your current lens.
     
    Stephen H. Westin, Dec 1, 2004
    #3
  4. Thom

    Kiron Kid Guest

    Anyone seen any data on whoi makes the sharpist 28-200mm zoom lens in
    I'm not a big fan of the "superzooms," However, I've seen some very good
    results from the Kiron 28-210 f/4-5.6 zoom.

    QLP
     
    Kiron Kid, Dec 2, 2004
    #4
  5. Thom

    Thom Guest

    I'm doing that now, have a second body with a Vivitar 70-210 which is
    going flaky on me (F-stop problems). I'ed like to reduce weight to
    one lens and one body when I'm hiking. Getting old I'm afraid.

    Thanks
    THOM
     
    Thom, Dec 3, 2004
    #5
  6. Thom

    me Guest

    Flaky how? What is the problem with the f-stops? I *may* know of a fix.
    Film, better than all the rest!
    me
     
    me, Dec 3, 2004
    #6
  7. Thom

    Bandicoot Guest

    None of them is anywhere near as good as a decent 28-80. That said, the
    Pentax one is among the better examples. I have one, use it very seldom,
    but always find it to be not as bad as I expect whenever I do...


    Peter
     
    Bandicoot, Dec 5, 2004
    #7
  8. Thom

    me Guest

    Does it stick when it's not on the camera? Look through the lens from the
    rear and rotate the aperture ring to see if it does.
    me
     
    me, Dec 5, 2004
    #8
  9. Thom

    Thom Guest

    it sticks on F:22 no matter what you set it at.

    THOM
     
    Thom, Dec 6, 2004
    #9
  10. Thom

    Thom Guest

    yes sometimes

    THOM
     
    Thom, Dec 6, 2004
    #10
  11. Thom

    me Guest

    The lever that protrudes from the back of the lens is spring loaded. If you
    move this lever by hand when the lens is set at f-22 the aperture blades
    will (should) open. The spring or the lever may be bent or binding. It is
    possible to take off the rear flange by removing the screws that hold it on.
    If you take it off for a look see you should proceed very carefully and
    remove the flange very slowly. There is a spring loaded ball that acts as a
    detent for the aperture ring. This ball can fly out and roll into the
    dustiest corner of your room never to be seen again. I have successfully
    reinstalled this ball on one of my lenses after it became dislodged (I
    squeezed the plastic aperture ring too hard while removing the lens from the
    body). If you're handy with small mechanical devices you may be able to fix
    this lens yourself.

    There may be one other thing that's causing the problem. If your lens has a
    capitol A just past the f-22 mark and there is a small spring loaded pin
    nearby on the aperture ring then you may have pressed this pin by accident.
    To set your lens for shutter priority you would hold this pin down and turn
    the ring past f-22 until it lines up with the capitol A. This pin locks the
    aperture ring in the lens's smallest aperture for shutter priority mode. If
    this is the case press the pin and rotate the aperture ring back towards
    f-22 (or any larger aperture). This happened to me once and I had to figure
    it out by guess work because there was no mention whatsoever of this setting
    in the manual that came with the lens and my camera is totally manual! Hope
    this helps.
    Good Luck!
    me
     
    me, Dec 6, 2004
    #11
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.