Panasonic Lumix DMC-G85MK Owner's Manual For Advanced Features page 71

3. Recording Modes
About [B] (Bulb)
∫
If you set the shutter speed to [B], the shutter stays open while the shutter button is
pressed fully (up to approximately 120 seconds).
The shutter closes if you release the shutter button.
Use this when you want to keep the shutter open for a long time to take pictures of
fireworks, a night scene etc.
•
It can only be used with Manual Exposure Mode.
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We recommend using a tripod or the shutter remote control (DMW-RSL1: optional)
when you take pictures with the shutter speed set to [B].
Refer to P309
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When you take pictures with the shutter speed set to [B], noise may become visible. To
avoid picture noise, we recommend setting [Long Shtr NR] in the [Rec] menu to [ON]
before taking pictures.
Not available in these cases:
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This function is not available in the following cases:
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When recording using the flash (only when [Flash Synchro] is set to [2ND])
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When recording 4K photos
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When recording with the Post Focus function
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When recording with the Bracket function
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When [HDR] is set to [ON]
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When using the electronic shutter
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When [Silent Mode] is set to [ON]
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When using [Time Lapse Shot]
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When using [Stop Motion Animation] (only when [Auto Shooting] is set)
for information about the shutter remote control.
(P200)
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