MINOLTA AF LENSES

Discussion in 'Minolta' started by Raistlin, Nov 16, 2003.

  1. Raistlin

    Raistlin Guest

    Hi Guys,

    As there are no distance scales on the sides of these lenses, how would one
    go about focussing them at infinity? I want to have a go at landscape
    photography but I'm concerned that I may not necessarily get the best
    results just by selecting the minimum aperture available for a lens. If
    it's not possible to set these to focus for infinity where is the best place
    in my composed picture to place the point of focus?

    Thanks for the advice,

    Raist.
     
    Raistlin, Nov 16, 2003
    #1
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  2. Raistlin

    Raistlin Guest

    Ok then, it would appear that nobody else has a clue either. Can anybody
    recommend a good Minolta users group / forum that may be able to answer this
    question?

    Thanks again,

    Raist.
     
    Raistlin, Nov 21, 2003
    #2
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  3. Raistlin

    BUFF Guest


    Fwiw, all of mine do have distance scales.
    What they don't have is a manual aperture ring.
     
    BUFF, Nov 24, 2003
    #3
  4. Raistlin

    Raistlin Guest

    I think it's only the (ahem!) cheaper kit lenses that don't have distance
    scales (hence the problem that I am having). The aperture, I think, will
    always be set from within the camera body as it's all linked up by the
    electronic wizardry therein.

    Cheers though,

    Raist.
     
    Raistlin, Nov 25, 2003
    #4
  5. Raistlin

    Simon Guest

    Well, all the Minolta lenses I have put the infinity focusing point
    at one end of the travel (looking from the viewfinder side, winding
    the lens all the way clockwise). Well, actually, if you do this you
    may end up focusing 'past infinity' as infinity is a little way in
    from the end of travel (various reasons have been discussed in the
    past for this: manufacturing tolerance, thermal expansion and the AF
    mechanism).

    Of course, you can verify this by switching your camera to manual
    focusing and twisting the focus ring one way or the other to find
    out where it focuses!

    If you want to do landscapes, you may not want to focus at infinity,
    but somewhere inwards of it - if you focus at infinity, your depth
    of field will be from somewhere in the image to infinity (effectively
    wasting the depth of field available 'beyond' infinity), while
    you should be able to focus closer and get a depth of field from
    somewhere closer than your focal point, through your focal point
    and then on to infinity. Many people suggest focusing about 1/3
    of the way into the picture - but for a full description of this
    you'll want to look up hyperfocal focusing, and maybe play around
    with one of the many depth-of-field calculators floating around on
    the net. Of course hyperfocusing is easier when there's a focusing
    scale on the lens!

    If you want more info on all things Minolta, there's a Minolta
    users group on Yahoo.

    Simon.
     
    Simon, Nov 26, 2003
    #5
  6. Raistlin

    Raistlin Guest

    <Snip>

    Hi Simon,

    Thanks for that useful information. I'll have a go with some of your
    explanations and see how I get on.

    Regards

    Raist.
     
    Raistlin, Nov 27, 2003
    #6
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