I watched the third Narnia Disney film "Voyage of the Dawn Treader".
It is significantly different from the book - I can't believe they agreed so much deviation.
Although they'd done the special effects very well and have good actors I didn't like it at all.

The BBC series from the 1980s followed the books quite closely.

CS Lewis is not some hack whose work they can mess around with. I got really irritated. The first two Disney films were more true to the books. I'd recommend anyone who is interested in Narnia to read the books instead of watching the films. The films even skipped two critical books in the series, no1 and no 3.