Sony on Thursday posted a warning that the bottom metal casing on some of its Cyber-shot digital cameras could peel and warp, creating a sharp edge that could scratch or cut the user's hand. The defect prompted the recall of 416,000 cameras.

Sony said on its product support site that the defect affected only its DSC-T5 Cyber-shot camera. The company is offering to replace the bottom case at no charge.

Sony said it discovered during parts production that there was a problem with the adhesive strength of the metal coating. As a result, damage to the bottom casing could cause the metal to peel away and warp outward. The defect affects DSC-T5 model Cyber-shots with serial numbers between 3500001 and 3574100. The serial number is printed on the bottom of the camera.

Sony said it would replace the part at no charge, and also would pay for shipping. Sony also would reimburse customers who have already paid to have the cameras repaired. If the repair was handled by the Sony service facility in Laredo, Texas, then a reimbursement check would be sent automatically by Sept. 30, the company said.

The recall covers 416,000 cameras sold in Japan, the United States, Europe, and China, Sony spokeswoman Ryoko Takagi told the Associated Press in Tokyo.

Sony first learned of the problem a month after releasing the product in September 2005, the AP said. About 30 people in Japan and "several" others outside the country have reported the defect, and some suffered small cuts and scratches.