Skylight HDRI Question

Hi All,

I have a problem with HDRI’s and the skylight portals. Basically, I’m rendering a train, and i want the HDRI to flood through the windows, but not disperse so readily and throughout the cabin. Essentially the HDRI seems to light the cabin evenly, but i want it to just come in through the windows and creep in a little bit, if i turn the light down it just reduces the light from the exterior, so I’m struggling to get a good punch through the windows.

Does anybody have any ideas? I hope the question is clear enough.

pictures would help but it sounds like you want bloom or crepuscular rays, as opposed to actual light. or are you trying to get really strong shadows?