Sony a7C Mirrorless Camera (Black) - Manual (Page 299)

Help Guide
Interchangeable Lens Digital Camera
ILCE-7M3 α7III
File Number
Selects how to assign file numbers to still images.
Menu item details
Series:
The product will assign numbers to files sequentially up to "9999" without resetting.
Reset:
The product resets numbers when a file is recorded in a new folder and assigns numbers to files starting with "0001".
(When the recording folder contains a file, a number one higher than the largest number is assigned.)
Hint
The setting for [File Number] will be applied to both slot 1 and slot 2.
Even if you change the setting of [Prioritize Rec. Media], the file numbers will be sequential across the two memory cards in each
slot by setting [File Number] to [Series].
4-732-947-11(1) Copyright 2018 Sony Corporation
MENU → (Setup) → [File Number] → desired setting. 1
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