Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very blurry Optical viewfinder

The Canon Powershot A710 IS that I received had a horribly blurry optical viewfinder. I wondered if it was just mine, so I visited some local stores. The A710 at the local stores also had blurry viewfinders, but not quite as bad as the one that I received. I searched the internet and found others who experienced the same problem.I've looked at Pentaxs, Sonys, Kodaks, and Fugifilms, and all their viewfinders are very sharp.It looks like Canon has a quality control problem with this camera.I returned mine for refund due to the defective viewfinder.