Description
Game's standard photo mode frames adapted to 21x9 ratio.
Tested on a 2560x1080 monitor with a game version 1.9.51.0.

Installation
1. Make sure you have enabled Archive Invalidation or you just have a StarfieldCustom.ini in Documents/My Games/Starfield
2. Extract Data folder from .zip to Documents/My Games/Starfield

Remember to remove the vanilla letterbox by adding the following to StarfieldCustom.ini:
[Interface]
bPhotoModeLetterBoxed=0

Note
If you open the .dds, you may notice that all the frames have empty space on the right side. This is because when you remove the vanilla letterbox, a bug occurs where all frames appear to be shifted to the right, even if the frame is perfectly adjusted to the monitor ratio. It looks like this.
The empty space on the right side of the frames solves this problem. However, if for some reason you don't have this bug, the option files will include frames that don't have this blank space.

Credits
The artists at Bethesda who created such beautiful frames.
Image by freepik
Image by ilovehz on Freepik
Image by Vectonauta on Freepik