I am attaching this photo and I am encircling a option and numerical on my camera screen. I want to know more about it and how to set it because if I high it then photo takes lots of time to take if low then photo takes less time but becomes dark and not good. PLease give me a good setting for keeping on my camera!! http://i50.tinypic.com/28996v6.jpg
The first number is the shutter speed and the second is the aperture. The two factors control the exposure.
The shutter speed (in this case 1.3 seconds) is how long the shutter is open to allow light to pass through the lens and strike the image sensor. The longer it's open the more light passes through. If there's not much light, like indoors or at night, the shutter needs to be open longer. A fast shutter speed can "freeze" motion, useful for things like sports. A slow shutter speed allows the subject to blur, useful for things like running water.
The aperture (in this case f/4.5) is a measure of how wide the lens opening is. The wider the opening the more light comes through. A smaller opening produces more depth of field.
The two work in tandem to achieve proper exposure. An oft-seen analogy is filling a bucket with water. You can turn the tap on all the way and fill it quickly, or just crack it open and let it take a long time filling drop by drop. Either way the bucket eventually fills up, but the two pictures may look very different.
I suggest you visit your local library and take a look at some introductory photography books. They will discuss the impact of shutter speed and aperture in much more detail than I can give here.
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SOURCE: canon powershot a95
This is either a "stuck shutter" or "CCD image sensor failure". If the latter, Canon will fix for free (more details later). First you need to check if it's a stuck shutter problem.
To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.
If movement is seen, then it's likely a failed CCD, for free worldwide, and may also include free shipping both ways (free shipping varies with countries). This is regardless of your camera's warranty status. Please check this link for more info.
Applicable cameras include:
A40, A60, A70, A75, A80, A85, A95, A300, A310, S1 IS, S60, S200, S230, S330, S400, S410, S500, SD100, SD110, IXUS V2/V3/300/400/430/500/II/IIs, IXY Digital 200a/300a/320/400/450/500/30/30a
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