I saw the film years after reading the novel, and the structural changes really stuck with me. The book relies heavily on Oskar's internal world—the photos, the blank pages, the way the typography physically represents shouting or silence. You lose all that tactile, visual reading experience on screen. The film streamlines the narrative, focusing more on Oskar's physical quest and his interactions with the strangers. It becomes a more straightforward, albeit still poignant, mystery about his father's key.
The biggest shift, for me, is the handling of the grandparents' storyline. In the book, their letters and the history of the Dresden bombing are interwoven with a much heavier, parallel weight to 9/11. The film condenses this a lot, using visuals and less dialogue, which makes it feel more like a backdrop than the core counterpoint it is in the novel. Tom Hanks as the father also gets more screen presence through flashbacks, which tilts the emotional center slightly away from the pure, unfiltered lens of Oskar's perspective.
Some choices worked for the medium. The 'Reconnaissance Expedition' scenes across New York have a lovely, lonely texture. But the ending felt different in tone. The book's conclusion is more ambiguous and fragmented, leaving you with the scrapbook of his journey. The film aims for a clearer, more consolidated emotional resolution at the cemetery, which is satisfying in a cinematic way but lacks the lingering, incomplete ache of the final pages. I still think it's a respectful adaptation, but it’s definitely a translation into a different emotional language.