Arun John posted an answer for this Canon PowerShot SX40 HS Digital Camera 2GB Memory Card Camera/Lens:
"Instead of deleting the content on the card, format it in the camera and see if it works...."
Arun John posted an answer for this Canon PowerShot A1300 16 Megapixel Digital Camera - Black:
"It could be some dust particle on the lens to a faulty sensor. Check the lens if you can..."
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