I haven’t posted before, so forgive me if I’m missing the mark in some way. Have you considered a camera on a stand? We use a good-quality digital camera with a copy stand when we digitize fragile books. We position the book, supported by foam cushions, so we can photograph the first half of the book (rectos, odd pages) without moving the book, and then reposition the book to photograph the second half (versos, even pages). It works really well, both for a good quality digital image and for minimal wear and tear on the book. We use Adobe Lightroom for color correction, straightening, cropping, and embedding some basic image info; it can export both tiffs and jpegs of various sizes such as thumbnail images.