Softcover photo books with soft pages has binding V1 (sewn with staple) and from page 28 glued binding V2. It has thin pages that can be folded, like the pages of a magazine. So the opening of the book is not completely straight (to the maximum). Holds up to 120 pages with photos.--Layflat photo album has a book binding - so called layflat (so it can be unfolded on each double page) and hard pages (like children's picture books), which cannot be bent and are beautiful to flip through and also last longer. Holds up to 60 pages.