Repair newer OnePlus RAW (.dng) photos from newer affected builds so they render as uncropped 4:3.

Reported issue: OnePlus 13 and OnePlus 12 RAW photos are stretched — Adobe Community

OnePlus 12 and OnePlus 13 users report that RAW (.dng) photos from newer builds can appear horizontally stretched and unusable when opened in apps outside the phone's own gallery — including Lightroom Mobile, Lightroom Desktop, Photoshop, RawTherapee, Windows Photos, and Gwenview.

JPEGs from the same phone are unaffected. The issue has been reproduced on newer OnePlus builds with RAW files shot in non-4:3 aspect ratios (16:9, 1:1, etc.).

Some older files from previous builds already behave correctly and should be left alone. This tool targets the newer affected files that need DefaultScale repaired so apps stop stretching the stored RAW data. Photos shot in 4:3 mode are unaffected.

The script patches the DefaultScale metadata tag (TIFF tag 0xC61E) anywhere it appears in the DNG image stack. On affected newer builds, OnePlus incorrectly writes this as 1.0 × 1.0 (square pixels). Setting the vertical scale factor to the correct value in both the top-level IFD and the RAW SubIFD keeps the file internally consistent and tells DNG-compliant software to render the RAW image at the proper 4:3 aspect ratio.

To keep repaired output aligned with older, non-affected captures, the script only applies the fix by default to newer OnePlus Android 15+ builds. Older files are reported as skipped.

No pixel data is modified. It is a metadata-only change touching the DefaultScale values stored in the DNG image stack.

This tool does not crop RAW data.

Correcting DefaultScale changes only display geometry, so the RAW can render as uncropped 4:3 while previews still reflect the phone's selected framing.

In practice, after fixing:

• the embedded preview can still look like the original 16:9 framing
• the RAW image can render as uncropped 4:3
• some apps may therefore show a preview that does not match the RAW composition

This is expected. Matching the phone preview more aggressively would require changing crop-related DNG metadata, regenerating the embedded preview, or actually cropping RAW image data.

• Python 3.7+
• tifffile

pip install tifffile

This repository also includes a reusable Codex-compatible skill at skills/oneplus-raw-fix/.

Once this repo is published on GitHub, users can install it with the skills CLI:

npx skills add <owner>/oneplus-raw-fix --skill oneplus-raw-fix

The skill is meant for agents helping users scan a photos or gallery folder, find affected newer-build .dng files, and run its bundled fixer script with either a safe output directory or --in-place when explicitly requested.

# Output saved as <original>_4x3.dng next to the source file
python oneplus_raw_fix.py photo.dng

# Write fixed files into a directory
python oneplus_raw_fix.py photos/*.dng --output-dir fixed/

# Overwrite the originals
python oneplus_raw_fix.py photos/*.dng --in-place

<original>_4x3.dng

• OnePlus 12 (CPH2583)
• Lightroom, RawTherapee, Windows Photos, Gwenview

• All raw pixel data, color profiles, lens corrections, and EXIF metadata are preserved.
• If the file is already correct, the script reports it as skipped and does not modify it.
• Older OnePlus captures are also skipped by default so the output stays aligned with previous non-affected versions.
• Older correct DNGs are useful as behavioral references, but the script does not copy their crop, color, or build metadata into newer files.
• May work on other devices with the same DefaultScale metadata bug.