Damage from Visible Dust wet cleaning solution

Discussion in 'Digital Photography' started by DD, Aug 3, 2005.

  1. DD

    DD Guest

    DD, Aug 3, 2005
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  2. Bart van der Wolf, Aug 3, 2005
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  3. ...
    Especially if you are squirting in there like you are hosing off your car.

    Rita Ä Berkowitz, Aug 3, 2005
  4. Reading things like this sure makes me glad that I bought the Olympus E300
    with the automatic supersonic wave filter dust removal system. It works,

    Take care,

    Mark & Mary Ann Weiss

    Hear my Kurzweil Creations at: http://www.dv-clips.com/theater.htm
    Business sites at:
    Mark & Mary Ann Weiss, Aug 4, 2005
  5. DD

    MarkH Guest

    MarkH, Aug 4, 2005
  6. DD

    Celcius Guest


    Not to damp your enthusiasm, but the main thing about a camera is not "the
    automatic supersonic wave filter dust removal system", but how well photos
    turn out. There's the proof of the pudding.

    I turned to Dpreview, not knowing about your particular model. It is rated
    as "Recommended", but there seems to be a few problems related to metering
    and image processing. Although, there are many good things about this
    camera, the following are listed as cons:
    a.. Recommended sensitivity ISO 100 - 400, images at ISO 800 usable, ISO
    1600 not really
    b.. Demosaic artifacts on JPEG and Olympus Master processed RAW
    c.. Images not per-pixel as 'crisp' as from other D-SLR's (image
    processing / low pass?)
    d.. Moire artifacts can be detected in fine repeating detail
    e.. Noise tends have the appearance of color mottle not 'film like' grain
    f.. Metering bug sometimes left under-exposed images (isolated issue?)
    g.. Auto focus provides just three focus points, although AF performance
    h.. Viewfinder slightly darker than E-1, seems smaller than EOS 300D / 20D
    i.. Over-saturated Adobe RGB images
    j.. Poor continuous shooting capability, small buffer
    k.. No focus distance indicator on kit lens
    l.. Flash must be raised for AF assist
    m.. Potential to lose images if CF door is opened during write
    n.. Only USB 1.1 (no USB 2.0 Hi-Speed?)
    I know that many of the above are moot points, but in my estimation, weigh
    far more than the "the automatic supersonic wave filter dust removal

    Just my 2 cents

    Celcius, Aug 4, 2005
  7. DD

    Bill Hilton Guest

    Mark & Mary Ann Weiss wrote ...
    Should also mention that the Oly imaging division lost 24 billion yen
    last quarter (the rest of the company made 12 billion yen ... hmmm) and
    4/3 has not exactly set the world on fire when compared to Canon and
    Nikon sales, so there is a reasonable doubt as to whether or not this
    format will survive. For sure it won't survive many more quarters with
    losses in the billions of yen range.

    It's a nice little camera but there's a real question as to whether or
    not it's a dead end, given the slow sales, handicap of the small
    sensor, and lack of support from other makers (it's an open standard,
    any one can make lenses and bodies for the system without paying
    royalties, yet no one else has taken the leap of faith yet).

    Bill Hilton, Aug 4, 2005
  8. DD

    l e o Guest

    SO is the filter completely sealed with the sensor? That is what I would
    think but what is the FACT?
    l e o, Aug 4, 2005
  9. DD

    MarkH Guest

    Yes, I am curious about that too. I certainly wouldn't conclude anything
    from the experience of one isolated blogger. My own experience is nil, I
    have only had my D-SLR for 2 years and have not yet had a need to use any
    wet cleaning methods. In fact dust on the sensor has not really been an
    issue to me, regardless of whether there is any on the sensor I have not
    noticed any spots on the pictures I take. Maybe I'll check and give it a
    blast with my rocket blower.
    MarkH, Aug 4, 2005
  10. DD

    Sheldon Guest

    I've been using Pec Pads and Eclipse solution wrapped around a wand. I only
    use about three drops of solution, not enough to seep into anything, and
    have never followed up the procedure with a dry pad. Works like charm. I
    would think it would take quite a bit of solution to seem under the filter.
    Never had much luck with other methods, except a hand blower that I always
    use first.
    Sheldon, Aug 5, 2005
  11. DD

    dazza101 Guest

    G'day Rita,

    Well as I AM the blogger who posted the story, I can tell you that I
    didn't use the Sensor Clean liquid like I was "mopping a hospital

    Far from "pure carelessness", I used two drops of Visible Dust's Sensor
    Clean liquid on the sterile swabs they provide. This is the exact
    amount they recommend in their instructions and it barely coats the
    swab. I waited for it to soak into the fibres of the swab before wiping
    the sensor.

    The one thing that distinguishes Sensor Clean from other cleaning
    solutions, is that it is not methanol based. This means that it
    evaporates much more slowly and I believe this is how it managed to
    wick down under the IR-filter and spread across the CCD sensor. It may
    have happenned because of a pinhole defect in the seal between the
    IR-filter and the CCD sensor, but the result is still the same - my
    camera is wrecked and using Visible Dust's Sensor Clean according to
    their instructions is the principle cause.

    dazza101, Aug 5, 2005
  12. I don't want it to sound like I am coming down too hard on you, as this
    wasn't my intention. I just see too much misuse of products on a daily
    basis where the product gets blamed instead of the person *possibly*
    misusing it.
    Was this use in accordance to the camera manufacturer's recommendations or
    was this the instructions on the cleaning product? I feel that there are
    too many variables between camera manufacturer's and models that following
    the instructions on the cleaning product without doing research for other
    information is putting your sensor at risk.
    I would highly doubt that there would be a "pinhole defect" in the IR
    sensor. What I've seen when I researched the IR mods (Nikon D70) the
    filter is simply a flat piece that is sandwiched in place without seals. I
    can't say that all manufacturers do it this way, but I don't see a need for
    extra seals.

    What I have found by reading and personal experience is that the sensor is
    more durable and forgiving than one was lead to believe. I did my first
    cleaning with a PEC-PAD and distilled water since I was somewhat leery of
    using methanol based cleaners. I found that it wise to touch the PEC-PAD
    wrapped swab/wand to a separate PEC-PAD with a drop or two of liquid on it
    to load the proper amount of moisture. In most situations you should be
    looking for moisture instead of wet for your cleaning needs. Doing this
    yielded perfect results for me. After my comfort lever and skills increased
    I tried the ethanol based Eclipse cleaner using the same method. I prefer
    to error on the side of caution by keeping the liquid down to the bare
    minimum since, generally, electronics and liquids don't mix well.

    Anyway, good luck and I hope you get your camera repaired so you can start
    enjoying it again. Please keep us informed about the repairs.

    Rita Ä Berkowitz, Aug 5, 2005
  13. DD

    dazza101 Guest

    No worries, I guess that careless use of products is often a primary
    cause of problems...
    Visible Dust have written instructions as well as instructional videos
    on their website, I studied both before proceeding. As for Canon, they
    only recommend using a blower brush on the CCD or returning it to Canon
    for cleaning (as I explained in the blog post).
    The suggestion isn't that there is a pinhole defect in the IR filter
    itself, but rather that there is a pinhole or liquid path on the edge
    of the seal between the two. i.e. it would have wicked down the side of
    the two then along a gap between them by capilliary action. BTW, it was
    the Visible Dust tech guy that kept insisting that this was a result of
    a "defect" and therefore Canon's problem and not a result of using
    their product. As Canon don't recommend using a liquid cleaner, I am
    not convinced that this can necessarily be called a defect, but maybe a
    more widespread concern with cleaning using liquids on the 300D and
    possibly other cameras.

    Canon Canada aren't going to speculate on repairs until they see the
    camera, so it'll probably be a couple of weeks before I hear back from

    dazza101, Aug 5, 2005
  14. DD

    Deedee Tee Guest

    I don't know about that particular DSLR model, but look carefully at
    http://www.astrosurf.org/buil/d70/ircut.htm . This page (which is not
    mine) shows how to remove the IR filter from a Nikon D70. It is
    clearly seen that (1) the IR filter sits in front of the chip carrier
    housing the sensor, (2) the IR filter itself is a thin bluish film
    attached on the external surface of a thicker transparent glass plate,
    and (2) no liquid-tight seal is visible around the IR filter (the
    black frame that holds the IR filter in place is metal).

    So, any liquid spill can work its way between the IR filter and the
    optical-glass window of the chip carrier. Cleaning solution spilled on
    the edges of the filter can also potentially seep between the glass
    and the film/coating of the IR filter (which means a permanent
    damage). The underlying window of the chip carrier must be sealed to
    avoid moisture from damaging the chip - a standard procedure with all
    ICs - so the inside of the chip carrier is probably safe.

    This also means that, at least in a D70, if you scratch anything while
    "cleaning the sensor", it will be the surface of the IR filter, not
    the colour-separation microfilters in front of the Bayer sensor or the
    surface of the sensor chip as I have seen stated more than once on web
    sites. I don't know where the antialiasing filter sits, but I would
    expect it to be very close to the chip and therefore also not
    vulnerable when "cleaning the sensor". Does anyone know for sure?
    Deedee Tee, Aug 6, 2005
  15. Are you sure it's between the filter and CCD cover glass? I suspect
    it's more likely wicking into the space between layers in the filter.
    The filter actually contains 4 layers; see
    Lots of finger-pointing going on. Canon doesn't claim you should use
    liquid cleaner at all, so they don't guarantee that the filter is sealed
    along the edges. Visible Dust claims that the filter should be sealed
    (and probably is sealed in most cameras) so their recommended procedure
    is safe. But in the end, they won't warranty the procedure if it causes
    a problem even if you follow their instructions.

    Dave Martindale, Aug 6, 2005
  16. This also means that, at least in a D70, if you scratch anything while
    It's probably sandwiched with the IR filter, and all of them mounted
    just in front of the sensor package. That's what Canon does, and I
    don't see any reason for Nikon to be any different. The AA filter
    doesn't need to be registered with the pixels of the sensor (unlike the
    Bayer filter) so there's no need to put it inside the sensor package.

    See http://www.canon.com/technology/d35mm/01.html for how Canon does it.

    Dave Martindale, Aug 7, 2005
  17. Minor quibble: The Bayer filter isn't a separate unit but is manufactured
    into the chip during the chip fabrication process, so there's never a
    question of registration with the pixels. At least for the consumer dcam
    sensors from Sony, so I presume also for the Canon CMOS sensors.

    See the figure on page 2 here (although this is a video camera chip):

    David J. Littleboy
    Tokyo, Japan
    David J. Littleboy, Aug 7, 2005
  18. I don't see how that's a quibble. I was saying that the Bayer filter
    needs to be manufactured with the chip and inside the chip package
    because registration of the filters with the sensels is critical.
    It's effectively part of the sensor; I didn't suggest it was a separate

    In comparison with that, the AA filter *doesn't* need to be registered
    in this way, so there's no reason to put it inside the package - just in
    front of the package window will do fine.

    Dave Martindale, Aug 7, 2005
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