Sony has confirmed at 3D games will be limited to 720p resolution. Games that run natively at 1080p are being scaled down in 3D mode, with one 720p image being output for each eye. Sony’s Simon Benson explained during the Develop conference in Brighton that the limit was imposed to keep games running at a smooth 60 frames per second.
Benson said that a “more cinematic game” could work with the higher resolution and lower framerate but right now, Sony’s 3D gaming guidelines currently don’t allow it.