Sony ILCE-7RM2 How To Use Manual page 190

Note
Even if you set [S. Auto Img. Extract.] to [Off] with [Hand-held Twilight] selected
as the scene recognition mode, one combined image is saved.
When the [
even if you set [S. Auto Img. Extract.] to [Auto].
When [ Quality] is set to [RAW] or [RAW & JPEG], the shooting function will
be limited.
[174] How to Use
APS-C/Super 35mm
Sets whether to record in APS-C-equivalent size for still images and in Super
35mm-equivalent size for movies.
1. MENU →
Menu item details
On:
Records in either APS-C-equivalent size or Super 35mm-equivalent size.
Auto:
Automatically sets the capture range depending on the lens.
Off:
Always captures 35mm full-size image sensor pictures.
Note
When you attach an APS-C compatible lens and set [APS-C/Super 35mm] to
[Off], shooting may fail.
When you set [APS-C/Super 35mm] to [On], the angle of view will be the same
as when shooting with an APS-C size image sensor.
When [ File Format] is set to [XAVC S 4K], [APS-C/Super 35mm] can be set
to [Off] or [On].
[175] How to Use
Auto Obj. Framing] function is activated, two images are saved
Using shooting functions
(Custom Settings) → [APS-C/Super 35mm] → desired setting.
Using shooting functions
Setting the other functions of this product
Setting the other functions of this product