Device
Medium confidence
NIKON D3
Release
2011
Observed span
2011 – 2024
All patterns are aggregated and anonymous — no originals retained. Privacy details →
Embedded ThumbnailA small JPEG preview stored inside the EXIF APP1 segment, written at capture. May differ from the full image if the file was post-processed.
Rate at which this device embeds a thumbnail in the EXIF APP1 segment.
IPTC Metadata RateInternational Press Telecommunications Council — an editorial metadata standard for captions, copyright, and keywords. Usually added by software rather than written by cameras at capture.
Percentage of files that included IPTC metadata (typically editorial or copyright data).
APP14 SegmentAdobe colour transform marker — a JPEG segment storing a single byte that tells decoders how to interpret YCbCr colour channels when converting to RGB.
APP14 (Adobe color transform marker) presence rate.
SOF Compression TypeStart of Frame marker — identifies the JPEG compression algorithm. SOF0 = baseline DCT (most common); SOF2 = progressive DCT (multiple passes, common in web-optimised images).
JPEG compression markers (SOF0 = baseline, SOF2 = progressive).
| Observed value | |
|---|---|
| SOF0 |
JPEG Segment InventoryThe set of JPEG markers consistently present in output from this device. Marker presence and order are firmware-determined and can help distinguish camera lineages.
APP and SOF segments consistently present in output from this device.
| Observed value | |
|---|---|
| SOSStart of Scan — marks the beginning of the compressed image data stream. | |
| DQTDefine Quantization Table — the 64-value lossy compression matrix. Consistent per firmware; useful as a fingerprint. | |
| DHTDefine Huffman Table — the compression lookup table baked in by the encoder. | |
| SOIStart of Image — the 2-byte marker that opens every valid JPEG file. | |
| APP1Primary metadata container — holds EXIF camera data (make, model, GPS, settings) and optionally XMP. | |
| APP13IPTC data container — used by Photoshop and some cameras for editorial and copyright metadata. | |
| APP2ICC colour profile or FlashPix extension data. | |
| SOF0Start of Frame, Baseline DCT — the most common JPEG compression type. | |
| EOIEnd of Image — the 2-byte marker that closes every valid JPEG file. | |
| APP14Adobe colour transform marker — stores a byte indicating how YCbCr channels map to RGB during decoding. |
Metadata Block TypesThe metadata container formats found in files from this device — EXIF, IPTC, XMP, JFIF, and others. Different devices and software pipelines embed different combinations.
| Observed value | |
|---|---|
| Exif | |
| ICC_PROFILE | |
| Photoshop 3.0 | |
| Adobe | |
| IPTCInternational Press Telecommunications Council — editorial metadata: captions, copyright notices, keywords. | |
| XAPEarly Adobe XMP namespace prefix (xap:) used before xmp: was standardised. Seen in older cameras and Photoshop CS versions. | |
| XMPExtensible Metadata Platform — Adobe's XML-based metadata layer for editing history, rights, and additional descriptive data. |
Your photos carry this device fingerprint.
Vaultify strips device metadata before sharing — and can hide a private message inside your photo, invisible to forensic scanners like these.
