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Re: How long should a P&S digital camera last?
Patrick,
Have you looked at the EXIF information on the photos that have excess noise? If so, is the ISO value high (400 or greater)? Most p&s cameras, with their tiny sensors, do not perform well at higher ISO settings, and you will get the noise that you have described.
If you are getting higher ISO values than you did in the past, then the most likely culprits are either (1) you are using the camera differently than in the past, or (2) something in the light metering system for the camera has changed and/or malfunctioned. While I am sure it's possible, I have not heard of issues with the actual sensor itself "wearing out". Now, on a DSLR, where the sensor can be exposed when the lens is removed, it is certain possible to physically damage a sensor. Since a p&s camera has a fixed lens, though, it is hard to image that happening with that type of camera.
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