At night in game when i use the manual, i find that when i open it its too dammm white and bright!. It makes my pupils contract and when i try and see the ship through the periscope its so much darker and i have to close the manual. After i close the manual the ship becomes more visible as my pupil expands again. Maybe by applying a red filter over the manual (which would make sense considering it is night time and running the red lights) i will be able to keep the manual open while idenitifying the target at night. Any of you guys find it hard to id ships with the manual open when its at night in game?