Question about Canon Cameras

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Just bought eos 550d for a month. I realized that whenever I took photos with aperture of f7 and more there is a big black dot on the upper right of the images. The dot doesn't appear if aperture is f6 and below. Why is this and how to solve it?

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  • shahrulazam_ Mar 13, 2011

    My new EOS 550D has this problem. When I took pictures using aperture value f7 and above, a big black dot appears on the upper right of images but none if aperture is f6 and lower. Please help me solve this as I need to use my camera for my trip. To send to service centre will take 3 weeks to get it back.

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Hi,
There is chance that your settings are just off . Set your settings to AUTO and then try taking photos.

If you still have any queries feel free to ask us.

Shane

Posted on Mar 13, 2011

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You may need to clean the sensor? You can do it your self or take it to Canon Service Center. To do it yourself, Buy a blower from your local camera store - make sure it is the kind without the brush as they could damage your sensor or add more dust to it if it touches. Follow the instructions in you manual to expose the sensor. Hold the blower a small distance away and use the blower to try and blow the dust off. Take a few shots after you've done this to confirm the problem has gone away - if not, then repeat a few times.

If it still fails, then you may need to swab the sensor. Can be a bit nerve wracking for the first time, so if you're uncomfortable with that and the blower couldn't remove the dust then take it into Canon service centre.

Posted on Mar 13, 2011

  • Tanvir M
    Tanvir M Mar 13, 2011

    In best case cleaning the sensor will solve the issue. But in worst case there may be some dust or other particle inside of your lens and require de-assembling the lens to clean. Unless you are an expert I strongly recommend you not to try it yourself.

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