Panasonic DX-GX800 Operating Instruction And Advanced Features page 191

9. Using Menu Functions
[ISO Increments]
Applicable modes:
You can adjust the ISO sensitivity settings for every 1/3 EV.
> [Rec] > [ISO Increments]
MENU
Settings: [1/3 EV]/[1 EV]
[Extended ISO]
Applicable modes:
ISO sensitivity can be set up to minimum [ISO100].
> [Rec] > [Extended ISO]
MENU
Settings: [ON]/[OFF]
Not available in these cases:
• This function is not available in the following cases:
– When recording 4K photos
– When recording with [Post Focus]
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