Enter wide view mode first using the \ key then hit ctrl+\ to edit the view.
You can also experiment with the default FOV's in the eech.ini
eg:
[Graphics and textures]
minfov=20 # general field of view minimum, linked to key '7', normal fov (60) = key '8'
maxfov0=90 # general field of view maximum for Apache pits, linked to key '9'
maxfov1=90 # general field of view maximum for Havoc pits, linked to key '9'
maxfov2=90 # general field of view maximum for Comanche pits, linked to key '9'
maxfov3=80 # general field of view maximum for Hokum-B pits, linked to key '9'