Panasonic LUMIX DC-GH6 Owner's Manual page 286

Metering / Exposure / ISO Sensitivity – Preview Mode
•
It is possible to record in preview mode.
•
Range for shutter speed effect check is 8 seconds to 1/32000 of a second.
•
Depending on the [Constant Preview] setting, there are preview screens that
cannot be displayed.
•
You can always confirm the effects of aperture on the recording screen when in
[A]/[M] mode:
( [Constant Preview]:
•
You can assign the function that enables you to view the aperture effect just while
the button is being pressed to an Fn button:
( [Preview Aperture Effect]:
565)
527)
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