Instruct: Classify the given review as either positive or negative.
Query: Very Good Book

I must say this book has exceeded my expectations. So far the best book I've red. It is very well and understandably written. Very nice pictures. Yes, it is true that John describes usage of an analog camera, but the exposure principles are very well applicable to the Digital SLRs. I find it very useful especially for beginners. I believe also advanced users may benefit.