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Z-Clip for the camera activated. In Maxwell Studio you can see the effect of the Z-Clip feature also when looking through the camera in a viewport (right image). This allows you to quickly fine tune the placement of the near/far planes.
Render of the above camera viewport
This feature can be very useful for architectural renders where you need to look inside a building but you need to show what the lighting would look like as if a wall or roof was there. Please note that the areas where no light enters the object will be rendered black.