Increasing of map size

Hi everyone, I am making very detailed map, but more details it has than lesser the render zone (or how this red circle is called?)

Here is the pic

http://img19.imageshack.us/img19/3227/ssddffgg.jpg

No idea what the circle is but you can increase/decrease the rendering distance in Hammer with 1 and 2

So what are you asking?

The circle is something called Radius Culling. You can disable it by clicking on the “r” within the red circle on the tab, or click on “View” and then “Use Radius Culling”. I think it’s supposed to make it easier to render large maps in the camera view, but it makes it worse for me.

Please post here in the future, instead of making a new thread.