Olympus dust removal...... in the long term

Discussion in 'Olympus' started by kosh, Oct 9, 2005.

  1. kosh

    kosh Guest

    HI all,

    just a thought.... and curious what others think.

    The New Olympus DSLR's use ultrasonic vibration to shake the dust away
    from the sensor.....

    what will the effect of htis be in the long run.... regular ultrasonic
    vibrations must have some knock on effect... be it on circuitry or
    solder points on the ccd/circuit board.

    what is everyones thoughts on this????

    kosh
     
    kosh, Oct 9, 2005
    #1
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  2. kosh

    Guest Guest

    .... and what happens to all the dust? Maybe the next
    model should have a little exhaust fan :)
     
    Guest, Oct 10, 2005
    #2
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  3. kosh

    Justin Thyme Guest

    The dust is collected in sticky pads that surround the sensor. I forget the
    actual expected lifespan of the dust collectors, but it would equate to many
    years operation in a dusty environment. In other words, most people are
    never likely to fill them up. As for damage to electronic bits, I doubt
    anything would happen. The sensor itself isn't shaken, it's the air
    immediately over the sensor. I can't see how this would damage anything. Far
    more likely to damage the sensor of a DSLR by cleaning the sensor in the
    traditional fashion.
     
    Justin Thyme, Oct 10, 2005
    #3
  4. kosh

    POTD.com.au Guest

    I wonder if people will start complaining that their Olys are getting too
    heavy in a couple of years time? ;-) lol
     
    POTD.com.au, Oct 10, 2005
    #4
  5. kosh

    Douglas... Guest

    Why wait? Mine's too heavy now ...with a 300mm f2.8 lens on it!
     
    Douglas..., Oct 10, 2005
    #5
  6. kosh

    Ken Chandler Guest

    How does it 'shake' the surrounding air at ultrasonic frequencies without
    having part of the camera do the same?

    KC
     
    Ken Chandler, Oct 10, 2005
    #6
  7. kosh

    Justin Thyme Guest

    You got it huh? Fantastic lens!
     
    Justin Thyme, Oct 11, 2005
    #7
  8. kosh

    [BnH] Guest

    <---
    The same principal as those jewellery cleaners.
    We never heard complaints of someone 2 ct diamond fell off after cleaning I
    presume ? :)
     
    [BnH], Oct 12, 2005
    #8
  9. kosh

    NikonF4 Guest


    OH MY GOD!!!!!!!!!!!! All my Canon lenses are going to FALL APART!!!!!!


    Another reason to buy Nikon, no USM.
     
    NikonF4, Oct 12, 2005
    #9
  10. kosh

    Douglas... Guest

    ROTFL...
     
    Douglas..., Oct 12, 2005
    #10
  11. kosh

    Ken Chandler Guest

    Yes, in the jewellery cleaner do-hicky there is something in the
    water/solution that causes the ultrasonic vibration. The point being there
    has to be something in the camera to cause the vibration of "the air
    immediately over the sensor".

    KC
     
    Ken Chandler, Oct 12, 2005
    #11
  12. kosh

    kosh Guest

    actually... far from being usm, the actually use opposite charge to
    repel 2 parts of the motor... causing motion... at least in the ring-type
     
    kosh, Oct 12, 2005
    #12
  13. kosh

    kosh Guest

    yeah, but when was the last time someone had highly sensitive
    electronics on their piece of jewellery?

    depending on manufacturing, solders on a circuit board can have a huge
    range of sensitivity. Ever use a wire bonder for 25 micron wire? That's
    what is used on many silicon chips.... no a diamond has not fallen off a
    ring... but if the clasp was 25 microns thick , I think it would be a
    pretty different story.

    so far as jsut the air vibrating.... anybody have a plane or helicopter
    go over their house to close.... It's just the air that's disturbed....
    but the windows still rattle!

    What I am curious about, is what else in the Olympus rattles (so to
    speak), and over what duration before this has consequences for the
    reliability of the electronics

    To give a slightly different perspective, my wife is a particle
    physicist specialising in Silicon detectors for Positron Emmision
    Topography (PET). Their detectors are remarkably similar to the CMOS and
    CCD's used in cameras. A look of horror came on her face when asked the
    question. Her subsequest response was it might not be too bad if the
    ultrasonic cleaning was vey directional, but backed well away from that
    when I mentioned it was activated every time the camera was turned on.

    Don't get me wrong, I think the Olympus idea ia great.... but I
    amgenuinely curious about this.



    kosh
     
    kosh, Oct 12, 2005
    #13
  14. kosh

    Rob Guest

    What have you been on "something in the water"

    You have use a couplant to transfer ultrasonic waves through to the
    object. Water is one such couplant. They don't travel through air. With
    the jewellery cleaner the vibrating crystal is attached/coupled/glued on
    to the vessel in which you place the jewellery and the water (cleaning
    liquid soap etc) transfers the sound waves.

    With the sensor I would say that the ultrasonic waves are generated by
    having the crystal glued to the sensor itself. No need for a couplant.

    You may have to fill the camera with soap and water to get it squeeky
    clean. :)

    rm
     
    Rob, Oct 12, 2005
    #14
  15. kosh

    Ken Chandler Guest

    Harsh :p

    I was referring to what I thought to be some type of metal object hanging
    over the side of the bowl. I'd not paid enough attention to the nice lady
    in the shopping centre who wanted to clean my bling.
    High pressure hose should do it, mind the water restrictions in your area.

    KC
     
    Ken Chandler, Oct 12, 2005
    #15
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