Panasonic LUMIX DC-GH6 Owner's Manual page 429

Special Video Recording – [Focus Transition]
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Maintain the same distance to the subject after setting focus positions.
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The moving speed of focus varies depending on the lens being used.
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The moving speed of focus slows as it approaches the closest focusing distance
of the lens or infinity.
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While using [Focus Transition], it is not possible to focus on anything other than
one of the registered focus positions.
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Any of the operations below will clear the focus position settings.
– Operating the camera on/off switch
– Zoom operation
– Switching the focus mode
– Switching the recording mode
– Replacing the lens
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When the following function is being used, [Focus Transition] is not available:
– [Variable Frame Rate]
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[Focus Transition] cannot be used when using an interchangeable lens that does
not support the focus mode [AFC].
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