Photography books are wonderful, and necessarily expensive.
eBooks offer the possibility of owning books I couldn’t afford, or at least for which I wouldn’t want to pay the hardcover price. On the iPad, the images are excellent, maybe even astounding — I haven’t tried the iPad 3.
Take a look at these:
Daniel Milnor, Peru – free from iBooks
Elliott Erwitt – Personal Best eBook – $5.99 vs $55 for a hardcover edition. I don’t know if it’s identical, but certainly the eBook is more accessible.