Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Speed and Simplicity of CanoScan 4200F

This scanner produces a good copy, is easy to use and has buttons on the device itself. The light stayed on continuiously, but an e mail to the company gave us the needed information to put it to "sleep". We bought this primarily to scan 35mm slides into our computer. It only does two slides at a time and it takes about 3 minutes to get the lamp "hot" or "bright" enough to scan the slides. Not having had any experience with any other scanner that can process slides, we have no idea if that is a typical time. Overall, this scanner is more than adequate when one considers it modest price.