Earlier this week, 20th Century Fox released a Multi-Touch Experience "iBook" for The Wolverine. An enterprising Tumblr user discovered that the book also contains 17 new images from the upcoming X-Men: Days of Future Past as well. Check out these behind-the-scenes photos featuring director Bryan Singer, Patrick Stewart, Ian McKellen, Ellen Page, Nicholas Hoult, Hugh Jackman and Michael Fassbender working hard on the set.

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<strong><em>X-Men: Days of Future Past</em></strong> Photo 17