Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Useless book unless you are (or want to be) a commercial photographer

If you are a portrait photographer (with no intention of moving into commercial photography) this book is a waste of money.There is only one chapter that will be relevant to you and that is the Beauty Retouching chapter, which admittedly is quite a good read. The rest of the book is useless for portrait photographers, who will never have to deal with art directors etc. I suggest you get the sample 'Beauty Retouching' chapter off the internet and save yourself the cash!I bought Katrin Eismann's 'Restoration and Retouching' the same time as this book and found it a good source of information on digital imaging for the portrait photographer, with chapters on Portrait and Glamour retouching.