Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Canon Powershot A610 5MP Digital Camera with 4x Optical Zoom

Very unreliable camera, since we bought this camera last December, the camera has been sent back to Canon three times for problems. The basic issue was that it did not take pictures. Each time, Canon fixed and sent camera back. For the third time, we requested a replacement because we believed that the camera was a lemon. The camera was out of commission for 4+ months out of the 12 month warranty for repair and transit time.