REQUEST - camera/scene settings in geometry nodes

it would be nice to be able to get the focal length directly as a node so I can make a frustrum culling setup a bit easier. that it all

Is a Driver could solve your problem for now or it is not compatible with your setup ?

This may help (it uses drivers)

There is a geonodes node addon pack by DB3D that has a limited camera node too (no focal length setting though)