File Number Sequence - Nikon D3400 Reference Manual

File Number Sequence

When a photograph is taken, the camera names the file by
adding one to the last file number used. This option controls
whether file numbering continues from the last number used
when a new folder is created, the memory card is formatted, or a
new memory card is inserted in the camera.
Option
On
Off
Reset
D
File Number Sequence
If the current folder is numbered 999 and contains either 999
photographs or a photograph numbered 9999, the shutter-release
button will be disabled and no further photographs can be taken.
Choose Reset for File number sequence and then either format the
current memory card or insert a new memory card.
218 B The Setup Menu: Camera Setup
When a new folder is created, the memory card formatted, or
a new memory card inserted in the camera, file numbering
continues from the last number used or from the largest file
number in the current folder, whichever is higher. If a
photograph is taken when the current folder contains a
photograph numbered 9999, a new folder will be created
automatically and file numbering will begin again from 0001.
File numbering is reset to 0001 when a new folder is created,
the memory card formatted, or a new memory card inserted
in the camera. Note that a new folder is created
automatically if a photograph is taken when the current
folder contains 999 photographs.
As for On, except that the next photograph taken is assigned
a file number by adding one to the largest file number in the
current folder. If the folder is empty, file numbering is reset
to 0001.
G button ➜ B setup menu
Description