Nikon Zfc Mirrorless Camera with 28mm Lens - Manual (Page 282)

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The photo shooting menu: Shooting options
282
Option Description
[O verlay
mode]
･ [Add]: The exposures are overlaid without modification;
gain is not adjusted.
･ [Average]: Gain is adjusted before the exposures are
overlaid. The gain for each exposure is equal to 1 divided
by the total number of exposures taken. For example, in
a photo made by combining two exposures, the gain for
each exposure will be set to 1/2, while in a photo
combining three exposures, gain will be set to 1/3.
･ [Lighten]: The camera compares the pixels in each
picture and uses only the brightest.
･ [Darken]: The camera compares the pixels in each
picture and uses only the darkest.
[Save
individual
pictures
(RAW)] ･ [On]: Save both the multiple exposure and the shots that
make it up; the pictures are saved in RAW format.
･ [Off]: Discard the individual shots and save only the
multiple exposure.
[Overlay
shooting]
･ [On]: Earlier exposures are superimposed on the view
through the lens. The earlier exposures aid composition
of the next shot.
･ [Off]: Earlier exposures are not displayed while shooting
is in progress.