Select PowerShot S100 cameras are encountering a lens error, Canon confirmed on its Product Advisories page. An undisclosed number of the high-end point-and-shoots have had issues with a "disconnected part inside the camera," which causes the optic to malfunction. Canon suggests that the issue may be connected with exposure to heat or humidity, but regardless of the cause, the company is offering free repairs, even for out-of-warranty cameras -- assuming the issue is caused by this specific part. Qualifying S100s should have a serial number that begins with any number ranging from 29 though 41 (29xxxxxxxxxx, for example), and this specific offer only covers residents of the US and Puerto Rico, though owners in other countries should be able to reach out to their local support centers for assistance. You'll find the full advisory at the source link below.