Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good scanner but little depth of focus

Having owned a few scanners, this one has dissapointed be because of its shallow depth of focus. It is absolutely useless for any magazine articles or objects with any texture. I think we are talking submillimeter DOF. I'd like to send it back but put some wear on it. Other aspects of use are ok, though I find I need an AC adapter for my USB system when I use this scanner with my AC powered notebook computer.