Now is not the time to get into all the issues I have with the soon-to-be-released Clash of The Titans remake. But I will say this, if you can see the film in 2D, then do so.
The Clash 3D conversion is a truly hideous thing. Images are split, the editing, design, and framing decisions weren't made for 3D and it shows in every single shot. See it flat, if you're going to see it at all.