I thought as much - finally...
After viewing the pictures you pm'd me (I really don't think your worries are necessary), it is as thought.
You're perception of the camera in 3DRad is wrong because:
The image you are looking at in 3DS Max is a "render" - This is a high resolution still image. When this image is created - if you haven't already specified it - the software will create an optimised lighting environment (based on defaults) and the materials, shadows, etc will all be adjusted to these lighting conditions.
Thus the rendered image you are seeing in 3DS Max is unrepresentative of your model/environment as it actually looks.
As I said - camera's only show exactly what you ask them to. The camera in 3DS Max is taking in the extra information (lighting, reflections, shadows, materials) from the software. It's doing all the work for you, but can only do so on a still image. (Trust me - I know. Doing high end 3D animated rendered sequences uses whole render farms of PC's or your machine left on for a very - days - long time.)
The 3DRad camera is showing your model/scene as it actually is.
In order to add the lighting/reflections/shadows/etc in 3DRad - you have to achieve this manually through a mix of shaders, lightmaps, Sun and Pointlight objects, textures, real and faked shadows, and a whole host of optimisation. It's called game making where you have to work for the look you want. Enjoy!