How do I set camera render mode to spherical?

Quite straight forward question. What happens now is what I see changes as I rotate my character view.
For example:

http://i.imgur.com/MHXV3a8.png

And when I rotate my camera:

http://i.imgur.com/hgyjz1I.png

What I want is the distance of view not to change when I rotate my camera. How do I achieve this?

 

I don't think that there is a simple way to do that.

One way would be to only use custom shaders that clipped themselves at a fixed (spherical) distance from the camera.

Another would be to draw a spherical object centered at the camera into the z buffer before all the other geometry. This could be done either by a highly detailed spherical mesh, or by wrting a shader that outputs a computed value to the z buffer as well as color (or actually instead of color)

So: not without writing custom shaders I think.
Or maybe I am missing something obvious. Hopefully someone else will spot that.

 

You can just change the view distance of the camera. There is an option for spherical option in the Global Fog image effect you can add in later.