hello all.

i am following a tutorial on bg modelling where he sets his preferences -settings -working units to feet.

when i keep this setting in my comp and if i dolly the camera away from the object the grid starts to disappear. if i select default view in view menu the screen goes blank.

i also tried changing the values of far clip to maximum i can but no changes.

i am using a geforce GTS250 graphic card.

any body aware of this problem.