I made a screenshot with 20.000 pixel resolution. And it's not made with e_screenshot because that gives you certain errors on shadows and AO. It's made with capture_frames Also when you made screenshots with high resolution the glow changes. It becomes very small in size (not in intensity) so I edited the hardware shaders for a glow matching the low-resolution one.
WARNING - 26 MB - 10.000 pixel -better right click and "Save as"