You need to adjust the hlookat and vlookat-values in your scene. It looks something like this: <view hlookat="0" vlookat="0" fovtype="MFOV" fov="120" fovmin="70" fovmax="120" limitview="range" vlookatmin="-35" vlookatmax="35" />
You may also want to take a look at the view-settings in the krpano-docu where both settings are described.