Report from Japan: Hints of new DSLR's from Minolts, Pentax and Olympus

Discussion in 'Pentax' started by deryck lant, Dec 12, 2003.

  1. deryck  lant

    deryck lant Guest

    deryck lant, Dec 12, 2003
    #1
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  2. deryck  lant

    Mike Guest

    My hunch is that the Minolta DSLR will have built-in IS by having the sensor move to compensate for vibrations. To do
    this however, the body would need to know the exact focal length of the lens (including zoom position). Does anybody
    know if Minolta AF lenses already provide this information, electronically, to the body?
     
    Mike, Dec 12, 2003
    #2
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  3. deryck  lant

    Alan Browne Guest

    Another report suggests a 1.3 crop, 7 Mpix (DiFlex 7) is one rumored
    name). Yes, it is likely that the A1 IS will carry over. The A1 image
    stab is NOT the same as, eg: Canon IS. The image stab is translational
    in the A1 not rotational as in Canon IS or Nikon VR (which are entirely
    lens based.) If the A1 IS ends up in the new Minolta it will not really
    need to know the FL (IMO ... I've been wrong once or twice).

    [[Maxxum AF lenses provide zoom info for the flash zoom heads. I don't
    know how good the resolution of this info is ... the flash heads
    themselves (eg: 5400/5600) have 4 or 5 zoom positions.

    (D) lenses certainly provide distance (focus).]]

    Can somebody translate the following: the online "auto" translators
    mung many words.

    wfieger - 28.07.2003, 13:15 Uhr
    Inoffiziell: Minolta Diflex 7
    Offenbar hockt Minolta mit einer neuen - ihrer ersten - digitalen
    Spiegelreflex-Systemkamera in den Startlöchern. Und als Lohn für die
    späte Geburt wird es diese Kamera in sich haben: Man munkelt von 7
    Megapixel Auflösung und einem etwas größerem Format als üblich: Der
    Verlängerungsfaktor beträgt nur 1,3. Das erweiterte Minolta AFD-Bajonett
    ist zum bisherigen AF-Bajonett kompatibel. Das Gehäuse ist sensationell
    kompakt und wiegt nur 550g (ohne Akku und CF-Karte). Neben CF-I und -II
    Karten werden auch SD-Karten verwendbar sein. Ein besonderer Clou ist
    der große 2,5" Monitor, der auch bei Sonnenlicht noch deutliche Bilder
    produzieren soll. Einzigartig: Im Videomodus wird mit 640x480
    gearbeitet, wobei unabhängig vom verwendeten Objektiv ein digitaler
    10-fach Zoom mit Bildstabilisator zur Verfügung steht. Weiters gibt es
    Zeitraffer und Zeitlupenfunktionen. Das Gerücht stammt aus Japan,
    Minolta Europa weiß nach Rückfrage nichts davon und konnte auch keinen
    Markteinführungstermin nennen.
     
    Alan Browne, Dec 12, 2003
    #3
  4. deryck  lant

    Marko B. Guest

    Minolta lenses provide focal lenght info to the body. They transmit some
    other info too - i forgot wich one.

    m.

    sensor move to compensate for vibrations. To do
    lens (including zoom position). Does anybody
     
    Marko B., Dec 12, 2003
    #4
  5. deryck  lant

    Mike Guest

    I disagree. The system would have to move the sensor a larger distance to compensate for the same vibration depending
     
    Mike, Dec 12, 2003
    #5
  6. deryck  lant

    Gordon Moat Guest

    I think the better rumour mill items were the mentions of LED flash systems in
    camera phones. Also, there is a mention of zoom lenses in camera phones. Should
    sell millions of these next year. I'm still waiting for the video and still
    capability in the phones, which should be 2005.

    Ciao!

    Gordon Moat
    Alliance Graphique Studio
    <http://www.allgstudio.com>
     
    Gordon Moat, Dec 12, 2003
    #6
  7. deryck  lant

    Alan Browne Guest

    A: the Canon IS and the Nikon VR work by tilting certain lens elements
    inside the lens. The sensors for this are in the lens. this is
    rotational movement and it is the better system (v. Minolta). Of course
    you have to buy the IS / VR lenses for this and they are not cheap.

    B: The Minolta AS (Anti-shake in the A1), moves the digital sensor in
    the x,y plane inside the camera body. Hence, it will help, but cannot be
    as good as the Canon or Nikon system as most camera shake is in fact
    rotational (pitch, yaw, roll), not translational (up, sideways,
    fore-aft). The inclusion of this feature in the rumored Minolta DSLR
    body is an assumption, but quite likely I would think.

    Your intuition would be correct if the Minolta system looked at
    rotation, but AFAICT it looks only at translation. See the A1 demo on
    the dpreview site.

    Alan.


     
    Alan Browne, Dec 12, 2003
    #7
  8. deryck  lant

    Mike Guest

    I disagree. The system would have to move the sensor a larger
    Ah, I see. In that case, I'm skeptical of how well the AS system performs in the A1.
     
    Mike, Dec 12, 2003
    #8
  9. deryck  lant

    biesior Guest

    Does anybody
    Yes - every Maxxum/Dynax lens withl etter "D" (distance) can do it.
     
    biesior, Dec 12, 2003
    #9
  10. deryck  lant

    Tom Guest

    Yes, i recall some Minolta literature that stated that the lenses
    provided "i" series cameras (2nd generation AF cameras) with up to 12
    steps of focal length information. This included the first generation
    lenses as well as the later ones. The lenses also provide
    magnification, which is essentially distance combined with focal
    length, although I don't know what the resolution of magnification is
    on the earlier lenses. Of course the "d" lenses give very accurate
    distance info.

    I have also read disussions on some of the dimage 7_ and A1 forums
    that the AS in the A1 does actually include rotational motion as well
    as translational, although when I viewed the demo on dpreview, I
    couldn't tell if there was rotational motion. At the film (sensor)
    plane, the rotation would have to be pretty small due to the very
    limited depth of focus at the image plane.

    Tom
     
    Tom, Dec 13, 2003
    #10
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