Question about Canon PowerShot SD800 IS / IXUS 850 IS Digital Camera

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Fuzzy, Grainy Pictures

I have fuzzy pictures. I have adjusted the mode so it takes the highest resolution, but my pictures are still fuzzy and grainy during the day, at night, up close, etc.Help!

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  • Tamijyl Feb 07, 2008

    I see in the ISO settings my choices are HI and AUTO

    I don't see where I can adjust it to a number of 80.



    IS mode can be: continuous, shoot only, panning, or off.

    I assume I had it on continuous. Should it be changed to another option?



    Thanks for the tips.

  • Tamijyl Feb 08, 2008

    I am using the automatic mode, yes.

    And not digital zoom. The fuzzy, grainy pics happen in just regular with barely any zoom. It's really weird actually. It happens for many pictures but not all.

    Generally the ones I end up really liking and wanting to print out!

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This camera is a perfect one to show the problem with the tiny sensors in the typical point and shoot. From the same sensor size that previously gave 2 or 3 megapixels, Canon now extracts 7.something. In order to do that, they have to turn the gain up so that each pixel actually puts out a signal to be recorded. The natural outcome of that is noise. In this camera, Canon includes heavy noise reduction software that softens the image in order to reduce noise at the various ISO settings above the minimum one, but the result is still a mix of noisy and soft or fuzzy images.

However, the noise should be well controlled at the low end of the ISO settings.

I suspect you have somehow gotten the ISO setting set up higher than the lowest one. Use the four-way controller to access the ISO and set it to the lowest (80) value. This should give you noise free shots.

As an additional suggestion, read the concise review of this camera at Dpreview, the link for which I've provided.

http://www.dpreview.com/reviews/CanonSD800is/

If you have any questions, please let me know before giving this answer a rating and I will provide it. Thanks.

Posted on Feb 06, 2008

  • nsfbr Feb 07, 2008

    The rule of thumb for IS is, leave it in continuous unless you are concerned about battery life or are shooting something that involves you having to pan to follow the action (like following a car to track it and blur the background). Shoot only will make the image in your LCD not be stabilized, so that is kind of a pain.

    I believe that the reason your choices for the ISO are probably related to the overall mode settings you are using. Generally the more automatic you make the overall mode, the less control you have.

    Last thing, I forgot to ask if you are using the digital zoom. That could also cause what appears like noise or blurry images, since all that is happening is the software in the camera is using a smaller portion of the small sensor and then upsizing the image by interpolating the information. Since it can't actually create data, things get blurry.


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