(Image credit: HBO)

In case you hadn't heard, there's a new Harry Potter series on the horizon. This December we're all hopping back on board the Hogwarts Express, only this time it's on TV, with HBO planning to serialise the entire book series over the next few years. The trailers so far have drawn sharp scrutiny – which you might expect, given the popularity of the films. And now, a new series of character posters is raising eyebrows.

What did those poor kids do to upset the editor of these posters? The designs each feature one of the principal cast members' faces in close-up, with their wand held aloft in front of it. Their faces are effectively cut in half by the wand, and some feel they look bizarrely stretched. Poor Ron seems to have been particularly afflicted. Not only that, but each half of the faces appears to be lit by a different light source, making the whole thing look weirdly spliced together.…