Sony A7R IV Gebrauchsanleitung Seite 46

JPEG Image Size
The larger the image size, the more detail will be reproduced when the
image is printed on large-format paper. The smaller the image size, the
more images can be recorded.
MENU 
desired setting.
When recording in the full-frame size
When [ Aspect Ratio] is set to 3:2
L: 60M
M: 26M
S: 15M
When [ Aspect Ratio] is set to 16:9
L: 51M
M: 22M
S: 13M
When recording in the APS-C-equivalent size
When [ Aspect Ratio] is set to 3:2
L: 26M
M: 15M
S: 6.5M
When [ Aspect Ratio] is set to 16:9
L: 22M
M: 13M
S: 5.5M
GB
46
(Camera Settings 1)  [
9504×6336 pixels
6240×4160 pixels
4752×3168 pixels
9504×5344 pixels
6240×3512 pixels
4752×2672 pixels
6240×4160 pixels
4752×3168 pixels
3120×2080 pixels
6240×3512 pixels
4752×2672 pixels
3120×1752 pixels
JPEG Image Size] 
When [ Aspect Ratio] is set to 4:3
L: 54M 8448×6336 pixels
M: 23M 5552×4160 pixels
S: 13M
4224×3168 pixels
When [ Aspect Ratio] is set to 1:1
L: 40M 6336×6336 pixels
M: 17M
4160×4160 pixels
S: 10M 3168×3168 pixels
When [ Aspect Ratio] is set to 4:3
L: 23M 5552×4160 pixels
M: 13M 4224×3168 pixels
S: 5.8M 2768×2080 pixels
When [ Aspect Ratio] is set to 1:1
L: 17M 4160×4160 pixels
M: 10M 3168×3168 pixels
S: 4.3M
2080×2080 pixels