This Locus Online review of the 3D movie rendition of Neil Gaiman's novel, Coraline, was written by writer Gary Westfahl, who admires the novel. He recognizes, not surprisingly, that a movie is quite a different medium from a novel, and begins his review this way:

"For lovers of Neil Gaiman's novel Coraline (2002), writer/director Henry Selick's stop-motion animated film is about as good an adaptation as they could have realistically hoped for: he is generally faithful to the book's storyline...."

Of course, there is a but: he took exception to the treatment of the gentleness of the novel:

"As a whole, then, the film struck me as a bit too blunt, too crass, too bombastic for my taste."

Westphal has much more to say about the film. I've seen only the trailers and will most certainly watch the movie, but Westphal's review was enlightening and will inform my viewing.