Panasonic Lumix S5 Mirrorless Camera - Manual (Page 194)

7. Metering/Exposure/ISO Sensitivity
194
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[B] (Bulb)
If you set the shutter speed to [B] (Bulb), the shutter stays open while the
shutter button is pressed fully. (up to approx. 30 minutes)
The shutter closes when the shutter button is released.
Use this when you want to keep the shutter open for a long time to record
images of fireworks, night scenery or a starry sky.
0 We recommend using a tripod or the Shutter Remote Control (DMW-RS2:
optional) during bulb recording.
0 Bulb recording may create noticeable noise.
If you are concerned about noise, we recommend that you set [Long Exposure
NR] (
l 351 ) to [ON] in the [Photo] ([Image Quality]) menu before recording.
0 Bulb is not available when using the following functions:
– [6K/4K PHOTO]/[Post-Focus]
– [Time Lapse Shot]
– [Stop Motion Animation] (when set to [Auto Shooting])
– [High Resolution Mode]
– [Bracketing]
– [Live View Composite]