dirty sensor on Canon RebelXT

Discussion in 'Canon' started by Smed, Apr 24, 2006.

  1. Smed

    Smed Guest

    i just got this camera 2 weeks ago and i was taking pictures of a
    skyline last week when i noticed blackish "blobs" in the skyline... i
    cleaned the lens, hoping it would be so simple.. but the blobs
    remained... i pushed the lens release button and rotated the lens while
    looking through the eye piece... even though the lens was moving, the
    blobs stayed in the same place... when i got home i saw that the blobs
    were on the pictures themselves (so that ruled out a dirty eye piece)...
    i called the Canon Customer Service Rep.. he walked me through checking
    the sensor... i checked it and yes, it was dirty.. how?, i dont know...
    he told me to send it in and let the warranty cover it.. the UPS has it
    right now..

    so here are my questions:

    how did it get dirty?... i BABY this camera.. seriously.. i understand
    certain maintenance will be required to keep this camera in perfect
    running order, but is there something i can do to prevent this from
    happening in the future?...

    if its going to get dirty from time to time (understandable) do i have
    to send it to the company every time to get it cleaned?.. this would
    guarantee a professional job, but what a pain.. especially if im on
    vacation and dont want to be away from my camera for 2-3 weeks..

    i found this website doing a google search:

    if the site exists, it must mean others are having this problem too... i
    dont mind cleaning the sensor, but i would rather see it done in first
    person so i can ask all the "stupid" questions before i attempt and
    possibly damage my new toy...

    does anyone else in here have the same problem?.. do you clean it the
    same way the website instructs?.. what is Canon's policy on cleaning the
    sensor and voiding the warranty?...

    thanks for any advice...
    Smed, Apr 24, 2006
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  2. Smed

    Alexmcw Guest

    If you have the user manual you should be able to find it in the manual -
    directions for cleaning the sensor. Look in the index under "Sensor
    cleaning". If you do not have the manual you can probably find and download
    the manual at the Canon web site free of charge.

    Alexmcw, Apr 25, 2006
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  3. I used the swab and methanol method described at the site below. In
    fact, I used the exact brands shown there. It worked GREAT on my Fuji
    S2 that I bought used. I never had to clean it again as I always
    point the camera body DOWN when changing lenses. I felt that this
    kept crap from falling into the body.

    The swabs are not too expensive but the fluid is ridiculous. Not only
    that, it evaporates out of the bottle. I kept shaking it from time to
    time and after about 18 months it was gone. I think the little bottle
    was about $40. You need to find someone who really knows what's up
    because there are different swabs for different brands.

    Good luck.
    Chuckindallas, Apr 25, 2006
  4. Smed

    NoNoBadDog! Guest

    The Canon Rebel has a "Clean Image Sensor" function on the menu. Use it.

    NoNoBadDog!, Jul 23, 2006
  5. Smed

    NoNoBadDog! Guest

    *NEVER* repeat *NEVER* use these directions for cleaning camera sensors.

    Even though it is written by a camera repairman, moden multi-megapixel
    sensors can be destroyed by using the method described in the article.

    NoNoBadDog!, Jul 23, 2006
  6. Smed

    GSRS Guest

    So then what is the right way??

    GSRS, Aug 25, 2006
  7. Smed

    NoNoBadDog! Guest

    Using a camera blower brush, use a gentle puff of air and the brush to
    remove the stuff on the sensor. Cleaning the sensor using solvents, Q-tips,
    or other such items is only inviting permanent damage to the sensors.

    You should keep in mind that many who read these posts are new, and do not
    know that the sensors are extremely delicate. They may read such bad advice
    as was posted by "Chuckindallas" and scrub with a q-tip and cause major

    In addition, methanol can cause problems with the sensors in that it can
    react chemically with the surfaces and the bonding resins. It is *NOT*
    suitable for cleaning the sensor; while it may be used to clean other
    components, it must not be used to clean the sensors themselves. Bad advice
    all around.

    NoNoBadDog!, Aug 25, 2006
  8. Smed

    GSRS Guest

    Gotcha. Thanks for responding. I will keep this in mind.
    GSRS, Aug 26, 2006
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