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Add Image SubIFDs decoding and Nikon Z 9 sample #240

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Merged
merged 2 commits into from
Aug 23, 2025
Merged

Add Image SubIFDs decoding and Nikon Z 9 sample #240

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78fce94
Add Image SubIFDs decoding loop.
bruvelis Aug 10, 2025
1285a91
Add Nikon Z 9 sample files.
bruvelis Aug 10, 2025
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6 changes: 6 additions & 0 deletions exifread/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,12 @@ def process_file(
logger.debug("Exif SubIFD at offset %s:", exif_off.values[0])
hdr.dump_ifd(ifd=exif_off.values[0], ifd_name="EXIF", stop_tag=stop_tag)

# EXIF SubIFD
if details and "Image SubIFDs" in hdr.tags:
for subifd_id, subifd_offset in enumerate(hdr.tags.get("Image SubIFDs").values):
logger.debug("Exif SubIFD%d at offset %d:", subifd_id, subifd_offset)
hdr.dump_ifd(ifd=subifd_offset, ifd_name=f"EXIF SubIFD{subifd_id}", stop_tag=stop_tag)

# deal with MakerNote contained in EXIF IFD
# (Some apps use MakerNote tags but do not use a format for which we
# have a description, do not process these).
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Binary file added tests/resources/raw/nikon_z_9_high_efficiency_compressed_dx_cropped_max_overexposed.dng
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