You can shoot photos while viewing the lighten blending effects in the live view display.
The lighten blending feature lets you shoot with a long exposure to overlay only bright light trails without changing the exposure of the background.
Select B (Bulb） as the shooting mode and select ［LIVE COMP］. You can choose an exposure time for one frame of 1/2 to 60 s. When you press the shutter button all the way down to start shooting, the monitor display image will be updated at intervals of the set exposure time (after each exposure). Press the shutter button again to end shooting.