Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Kind of ambivalent

For quick and simple picture calibration, this is exactly what it claims to be. I hope an actual ISF professional would be a bit more involved than this. It marginally improved my DVD settings, except my problem wasn't with my DVD picture, it was more my satellite I was trying to fix. But now that I give it some thought, I guess all calibration DVDs are by definition only designed to work with DVD settings. Glad I didn't spend more than I did on it.