model culled

what can i do when camera nearfar ratio auto changed?
i make a plane fly over some kms from ground and set the  earthManipulator  tertheNode  to plane Node,
 the plane Node will be culled sometimes but always.

JackBi,

Try using the LogarithmicDepthBuffer. There's an example here of how to activate it:
https://github.com/gwaldron/osgearth/blob/master/src/applications/osgearth_manip/osgearth_manip.cpp#L155