Problem with Powershot A540..Help me out..

[Gokul K]

I have a strange issue with my Canon Powershot A540. Most of the images are with a small white circle.
Initially I thought its because of the dust on the lens then later found its something else. Even after cleaning the circle exists.
But I didnt find any loss in quality. What exactlty is that?Do I need to clean my CCD or something to do with firmware?
I am really confused. Please help me out to solve this issue.

Thanks
Gokul

[Jon]

Post an example?

[Gokul K]

Here is an example. Find attached image with this reply. Check the arrow mark where you can find a circle which appears in all the pictures.:( Please provide me a solution.

[Jon]

That does look like dust or dirt inside the camera, where you won't be able to clean it. Is it more prominent if you stop down to a small aperture? If the camera's still under warranty, I'd send it in - it's going to have to be disassembled to get rid of that and it's not where you can just ignore it.

[Gokul K]

Its still under warranty period. So I would need to give it for servicing.
Yes,I use small F stops. You mean bigger f stops would eliminate the problem?
Any ways thanks for your help.

[Jon]

At larger apertures the dust spot will be more out of focus, so less noticeable.