My book is heavily photographic, and written in Quark, I'm getting a sample epub of it done by a company in Guildford (UK) but in my desperation to see it on the iPad I came upon a way that for this book could hardly be improved upon. I exported each page as an eps file, then saved each eps file within Photoshop in sequence (so chronology of creation = page numbering) and then put them all in one folder and put that into the folder on my Mac I have designated for all my photos for the iPad. Terrific result, and the 132 pages take up just 130 megs, and you have the advantage that double-tapping on the screen gives a zoom on any photos embedded in each page. I cannot see how the epub format could equal this, and for sure there will be greater loss of photo quality. Apple need to create a new category for sale on iTunes, of DIY photo albums. The folk like me could choose to share our photos or books of photos in that manner, very easily. This approach will of course only suit those who have books which are like mine heavy with photos.