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  1. #1
    Join Date
    Jan 2008
    Location
    Oregon
    Posts
    85

    Question Startup Sensor Shake

    Over the weekend, I shot extensively at several events, and I noticed something. It seems that the shaking process at startup that is supposed to clear any dust is sometimes lasting longer, usually more pronounced (louder and you can feel the vibrations are stronger), sometimes also slightly delayed.

    There seem to be no problems, and even after I did some cleaning once I got home, the varied performance on startup, compared to what has happened in the past, is continuing. Has anyone else experienced anything like this? Is this just a natural response to sensing what may still be some stray dust floating around, or an indicator that problems may be coming?


  2. #2
    Join Date
    Jun 2008
    Posts
    2,204
    Nope. What camera?
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  3. #3
    Join Date
    Jan 2008
    Location
    Oregon
    Posts
    85

    A200

    (Should have mentioned that.)

    My nervous nature made me wonder if the camera is trying to tell be something, or if it is just trying to do its job.

  4. #4
    Join Date
    Jun 2008
    Posts
    2,204
    I'm not sure that it cleans the mirror when you turn it on. Mine makes this like hmmmm like very short digital sound like somethings moving about 1/2 a cm. It's more high pitched.... really hard to describe.

    The shutter sounds normal and takes pictures fine though?
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  5. #5
    Join Date
    Jan 2008
    Location
    Ohio, USA.
    Posts
    1,161
    I think the sensor clean and dust shake are automated at start up. I do NOT think they can tell if dust or dirt is on the mirror or sensor and compensate for it. It may recycle itself and rerun the shake if it is picking up something? You may want to also check online foe info. or go to Sont support, I understand that can be more annoying then the problem you are trying to check on LOL! Just a guess here on my part.
    Sony A700_____________Minolta AF 50mm. F/1.7
    Minolta AF 70-210mm F/3.5-4.5 Tamron AF 17-50mm F/2.8 XR DiII LD Asp. [IF]
    Tamron SP AF 70-200mm. F/2.8 DI LD [IF] Macro
    Tamron AF 70-300mm F/4-5.6 Di LD Macro 1:2
    Tokina AF 28-70mm F/3.5-4.5
    Tokina AF AT-X 80-400mm F/4.5-5.6
    http://flickr.com/

  6. #6
    Join Date
    Jan 2008
    Location
    Oregon
    Posts
    85

    Shutter is fine

    And it shoots the same as always. Perhaps Mr. Don can better explain the workings of the sensor "cleaning" shake?

  7. #7
    Join Date
    Oct 2008
    Location
    Raleigh, NC, USA
    Posts
    788
    I am pretty sure the cleaning shake occurs when turning the camera off, not on. Don had some input on it here:

    http://www.dcresource.com/forums/showthread.php?t=41531
    Last edited by laydros; 10-27-2008 at 09:35 AM.

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