Portal, like many new-ish 3D games, have a very narrow FOV (in the 60-75 degree ...

MagerValp on April 22, 2015 | parent | context | favorite | on: To Reduce VR Sickness, Add a Virtual Nose

Portal, like many new-ish 3D games, have a very narrow FOV (in the 60-75 degree range) compared to classic 3D games (90-100). If you have a widescreen monitor (which amazingly wasn't standard when HL2 and Portal were released) try cl_fov 110 in the console.