If you find a problem, send me a note and I'll post a correction or explanation ASAP.
11/10/09: Based on reader feedback, I've completely revised how you download the book's example photos. They are now formatted as Lightroom catalogs, which means you can use the Develop mode's History panel to step through every adjustment made to every image.
That also means, however, that you'll need to switch from one Lightroom catalog to another to use them. Never fear, complete instructions—with photos—are available on the examples page. Dig in—and use the contacts link to let me know if you hit any snags.
2/04/09, page 126, 2nd Tip: The last sentence should read: "Moving in the other direction, a lens at f/4 lets in half as much light as one at f/2." But you probably recognized my mistake before I did.
Found an error in the book, or something confusing? Drop me an email and I'll post a correction or explanation ASAP. With your help, we can save others from the same headaches.