Excellent pictures of the frescoes, inadequate coverage of sculptures. This book is unrivaled for the sheer size of its reproductions. It is so huge that it is a bit difficult to read--one has to rest it on a table. Not suitable for reading in bed, to say the least. But the quality of the printing and colors in the main part of the book is first class. Its coverage is especially fine on the paintings. It comprehensively covers the Sistine Chapel with huge-size foldout prints of every fresco. There are fine close-ups of important areas, which are an amazing 2/3 of life size. One can examine these fresco details from a foot away--never before possible--instead of from 60 feet away with a craned neck. This can be breathtaking.
The sculpture photos are excellent too, but not numerous. I had been expecting several photos of each sculpture from various angles. Bacchus, Pieta, and David are well shown in multiple views but this is not the case for most works.
The text is on the whole very well written and illuminating.
The authors have extreme views on authenticity. This leads them to exclude very important sculptures because, it appears, the authors consider them unproven to be authentic. For example, the Santo Spirito wooden crucifix is shown only small, poor quality, and in black and white. (A far better, color, picture, can be found, free, in Wikipedia.) Even the Madonna and Child bas-relief that is his first work, the one selected to adorn the cover of the 1,000 euro ($1,500) La Dotta Mano book, and, worst of all, the four Slave sculptures, some of his most iconic works, are also relegated to poor quality black-and-whites at back of the book, as all are judged suspect by these authors. Drawings, however, if of doubful authenticity, or even known to be copies, escape this rigorous exclusion. So we have too many drawings and missing sculptures.
Some paintings receive the same relegation: the Manchester Madonna (which is clearly at least in part by Michelangelo) is hardly visible in a tiny, dark, picture, as is the Entombment (which I must agree is of doubtful authenticity).
A book claiming to be comprehensive should have more detailed and thorough illustrations of questioned works than this. Opinions change over the years and some of these will doubtless be accepted in the future. In some cases it seems that the authors are among a minority who dispute authenticity.
The book has a very large number of drawings, but the coarser paper in that section of the book, and the low contrast and low resolution and small size (even in this monster book) of their printing, makes them hard to see clearly. This section is in sharp contrast to the wonderful beauty of the fresco reproductions in the first section of this book. It would have been better to show fewer drawings at a larger size, and illustrate the sculptures properly.
Nevertheless, this is a truly outstanding book for the frescoes, and the photos of the sculptures that are shown and the text are excellent too. Worth its price.