Nikon Z 9 Reference Manual page 266

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Cautions: Retouch
•
The camera may not be able to display or retouch images that were taken
or retouched using other cameras or that have been retouched on a
computer.
•
If no actions are performed for a brief period, the display will turn off and
any unsaved changes will be lost. To increase the time the display remains
on, choose a longer menu display time using Custom Setting c3 [Power off
delay] > [Menus].
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Cautions: Retouching Copies
•
Most items can be applied to copies created using other retouch options,
although multiple edits may result in reduced image quality or unnatural
colors.
•
The effect produced may vary with the order in which edits are performed.
•
Some items may be unavailable depending on the items used to create the
copy.
•
[Retouch] items in the i menu that cannot be applied to the current
picture are grayed out and unavailable.
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Image Quality
•
Copies created from NEF (RAW) pictures are saved at an [Image quality] of
[JPEG fine m ].
•
Copies created from JPEG pictures are the same quality as the original.
•
In the case of dual-format pictures recorded to the same memory card at
image-quality settings of RAW + JPEG, only the NEF (RAW) copy will be
retouched.
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Image Size
Except in the case of copies created with [RAW processing (current
picture)], [RAW processing (multiple pictures)], [Trim], [Resize (current
picture)], and [Resize (multiple pictures)], copies are the same size as the
original.
Creating Retouched Copies
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