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Excellent information - well structured: armatures, abstract masses, colour shapes, guiding the eye through the picture plane, gallery of greats. Also, the various subjects are illustrated with clear examples. This is a reference book to be read and re-read.
There are some simple but effective ways to organise a picture. This pompous nonsense makes it seem far too complicated. When he should talk about structure he talks about colour. When he should talk about the golden section he waffles about boxes and L shapes.
I'm an occasional photographer, but I take the output quite seriously. Having decided to read around the subject a bit, I ended up with a copy of this book. The text and particularly the DVD in the back have hugely improved my understanding of the visual language. Whilst targeted at painters, minor edits to my photographs, based on the advice in the book, have hugely improved them. I'm so glad I've read it.
I have been painting (oils) for a few years now and have been taught a 'tonal' approach to art. This book is excellent and without doubt the single most helpful book I have read on the subject and indeed art in general. The examples relate to oil painting but the principles apply to all media. I higly recommend this book to beginners and experts alike.