You wouldn’t really want that, believe me. This features causes heavy distortion, in most cases even the current max. value is too much. I generally recommend values of ~0.5 which is a good compromise between (fake-)enhanced FOV and distortion.
In Geometry there is a ‘real’ FOV enhancement btw. That can cause other glitches but is generally preferable with Geometry3D. 0.5 is a good value here too.