Nikon D70 + Auto Mode

Discussion in 'Nikon' started by Anirudh, Jan 31, 2005.

  1. Anirudh

    Anirudh Guest

    Hi,
    A new entry into world of photography, I have just bought a Nikon D70
    + Nikor Lens 18-70mm (comes with the set).

    For the first snap I set the Auto Mode and clicked a scenery. It came
    blurred :-(
    Then in Auto Mode only i set the focus to infinity and clicked the
    photograph and snap came fine.

    The Query: Why in Auto Mode Do I have to set the focus? Also in Auto
    Mode zooming the snap (for a scenery) without setting the focus
    resulted in blurred photograph. Does D70 not work like Point-And-Shoot
    in Auto Mode?

    Eagerly waiting for the reply
    -Anirudh
     
    Anirudh, Jan 31, 2005
    #1
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  2. Anirudh

    DoN. Nichols Guest

    There is a switch on the front of the camera, near the button
    which releases the lens to allow changing it. That switch has two
    positions:

    AF

    M

    If in the "M" (Manual) setting, it disables the autofocus, and
    allows the lens' focus ring to be easily turned.

    If in the "AF" (AutoFocus) setting, you should not be able to
    easily turn the focus ring on the lens, and attempting to do so may well
    damage the gearing in the lens or the camera.

    So -- one may hope that your switch is in the "M" position, and
    that you have not damaged the camera or lens by fighting the autofocus
    mechanism.

    Best of luck,
    DoN.
     
    DoN. Nichols, Jan 31, 2005
    #2
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  3. You don't, the Camera will auto focus in any mode, providing the switch by the
    lens is set to that position.

    --
    Chris Pollard


    CG Internet café, Tagum City, Philippines
    http://www.cginternet.net
     
    Christopher Pollard, Jan 31, 2005
    #3
  4. Anirudh

    Anirudh Guest

    Hi,

    Thanks for the quick response.

    The Lens has 2 setting modes
    1. A/M <-- This one is set
    2. M

    The Camera has two setting modes
    1. A <--- This one is set
    2. M

    The Auto mode is set for both cases. Then why setting focus manually?
    (The focus ring is moving as smooth as it can)
    Another Question then from me. Does no focus need to be set for other
    pre-programmed shooting options? (like potrait, sports mode etc.)

    Some setting option I am missing in D70?

    btw tried sports mode, night scenery mode (setting the focus manually
    in all cases) and results were simply excellent.

    -Tx
    Anirudh
     
    Anirudh, Jan 31, 2005
    #4
  5. Anirudh

    Ken Tough Guest

    See the Tutorial section on Basic Photography in the manual,
    Step 5 - Focus, especially on pressing the shutter button half-way
    to set the autofocus. It's possible (but unlikely) that depending
    on how the camera was set up and what you were pointing at, it
    couldn't establish a focus.
     
    Ken Tough, Jan 31, 2005
    #5
  6. The default settings shouldn't let you take a photo unless you have focus
    lock.

    Try:

    1. Toggle the AF/M switch on the lens to M and back again (to make sure
    it's properly selected).

    2. Do the same with the A/M switch on the camera body.

    3. Reset most of the camera's settings with the "two-button reset" (see p.
    111 in the manual). To do this: hold down the BKT button (top-left of the
    colour LCD) and the button just behind and to the left of the
    shutter-release button for more than two seconds (both are marked with a
    green dot).

    4. Check that setting 2 on the custom settings menu (Autofocus) is set to
    AF-S ... this will only allow the camera to release the shutter when it has
    focus.

    If you can still take photos that are out of focus, then it _may_ be that
    something's wrong with the camera or the lens.

    Regards,
    Graham Holden (g-holden AT dircon DOT co DOT uk)
     
    Graham Holden, Jan 31, 2005
    #6
  7. Anirudh

    Ken Tough Guest

    Or perhaps its focussing on something unintended? If the default
    in those modes is 'closest object' then perhaps what's in focus
    isn't what you expect.
     
    Ken Tough, Jan 31, 2005
    #7
  8. Anirudh

    DoN. Nichols Guest

    My lens does not have any such switch, but I did not get the
    lens with the "kit" camera. I'm using a 28-105mm AF Nikor which I
    already had.
    Is this the same one which I am talking about? Mine is on the
    side of the camera, below the release button to allow changing lenses.
    The markings on mine are:

    1. AF
    2. M

    and the "AF" setting is selected when the black tab on the bottom is
    pressed back towards the camera body, and the "M" is selected when the
    black tab is pulled away from the body.

    This switch is shown as item 64 in the image of the camera on
    page 4 of the manual. (And the explanation of it is on page 64, to
    match the number beside the switch in the drawing.)

    Note -- one thing to check to make sure that the lens' autofocus
    mechanism is properly engaged:

    1) Press the lens release button (19) and turn the lens clockwise
    as viewed from the lens looking towards the body. It will turn
    about 1/6th of a turn and stop. At this point, lift the lens
    clear, and set it aside carefully.

    2) Look at the lens mount ring on the camera body, near the
    depth-of-field button (76). There should be a metal tab
    sticking out of it.

    3) Move the switch (64) to the 'M' position, and this tab should
    retract until it is below the surface of the lens mount.

    4) Move the switch (64) back to the "AF" position, and the tab
    should extend again.

    This tab is what couples the autofocus motor in the camera to
    the gearing in the lens which turns the focus ring. If you look at the
    back of the lens, you will find what looks like a slotted screw head in
    the position which aligns with the tab when the lens is locked in place.
    If you look at this while you turn the focus ring on the lens, the
    "screw head" should rotate. If it does not -- there is a problem in the
    lens itself, and the coupling between the "screw head" and the focus
    ring is broken.

    However, if the tab which should project from the camera's lens
    mount ring does not, no matter what the setting of the AF/M switch (64),
    then the problem is in the camera body.
    Which is not as it should be. If the autofocus is coupled, it
    should be difficult to move, and you should not move it.

    One other possible problem could be that the lens is not turned
    fully CCW to lock it into position. The release button (19) should pop
    out a short distance when the lens locks in place. I've just
    experimented, and discovered that it is possible to have the lens not
    quite turned far enough, and the CPU contacts can make contact, but the
    autofocus tab does not line up properly, and under those conditions, the
    auto exposure works properly, but the autofocus does not work. Check
    that out -- probably before you do any of the checks which I mentioned
    above.
    If the lens has an autofocus coupling (apparently sensed by
    whether the lens pushes the coupling tab in flush with the mount ring or
    not) then the rest of the automatic modes will work as normal, thinking
    that you have a manual focus lens, and that you are dealing with the
    problems of focusing. I have one lens for mine (180mm f2.8) which was
    converted by the addition of a CPU so the auto-exposure works (and works
    quite well), but which has no autofocus. I find it to be an excellent
    lens, and to provide no problems other than the lack of the autofocus.
    You have all of my thoughts above. FWIW, the manual which I am
    using to reference the camera drawings is the English language version
    with the identifier "6MBA1111-03" on the bottom right corner.
    Your autofocus should work. Hopefully you can get it working by
    checking out all that I have suggested. If not -- it needs to go in for
    repair while it is still under warranty.

    Out of curiosity -- I forget whether this is the lens which
    comes with the kit form or not. If it is not, are you sure that the
    lens does even *have* autofocus? Is it a Nikon lens, or a third-party
    lens? I know that some of the vendors are making up kits with
    third-party lenses.

    Best of luck,
    DoN.
     
    DoN. Nichols, Jan 31, 2005
    #8
  9. Anirudh

    Sheldon Guest

    I'm just guessing here, but there could be a few problems going on, and keep
    in mind that autofocus ain't perfect.

    1. I think the M/A setting on the "lens" allows you to easily override the
    autofocus.

    2. When in Auto mode (on the camera) you have little control over anything.
    Also, the focus shifts to whatever the closest object is to the camera, but
    if you switch over to P mode you can zero in on what you want to focus on.
    Each shooting mode has it's own focus mode.

    3. In dim lighting, flat lighting, or situations where the camera just
    can't figure out what to focus on, you will have problems. Sometimes I have
    no idea what the camera is trying to focus on.

    Play with the camera a bit more before you decide there is something wrong.
     
    Sheldon, Feb 1, 2005
    #9
  10. Anirudh

    Anirudh Guest

    Kuel ..... Got it working as desired :)
    This was the culprit ...I turned slightly and got a click noise and i
    knew "Auto Focus" should work great and it did .

    Also
    I did a typo, it is indeed 1. AF & 2. M
    The lens is one with the kit ... "AF-S DX Zoom-Nikkor 18-70mm
    f/3.5-4.5G IF-ED lens "


    Tx for whole load of combinations of inputs :)
    Thanks to everyone for all their input
     
    Anirudh, Feb 1, 2005
    #10
  11. Anirudh

    DoN. Nichols Guest

    Great! I kept trying to think of what could cause the behavior
    which you were experiencing, and decided to test whether that was
    possible, and once I discovered that it was, I added it to the list.
    O.K. I was hoping that that was the cause of my confusion.
    O.K. One which I have no direct experience with -- which is why
    I did not even know of the A/M switch on the lens itself.
    I'm glad that you got it working as it should.

    Happy shooting,
    DoN.
     
    DoN. Nichols, Feb 1, 2005
    #11
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