EXIF
Exchangeable Image File Format — the oldest widely-used standard for image metadata, typically for camera-origin data.
EXIF (Exchangeable Image File Format) is a metadata standard primarily for digital photographs. When you take a photo with a camera or smartphone, the camera embeds EXIF data into the image file: camera make and model, lens information, exposure settings (aperture, shutter speed, ISO), GPS coordinates, timestamp, flash status, and more. EXIF is embedded in JPEG and TIFF files via an APP1 marker segment.
What EXIF carries
EXIF is camera-centric. It records how and where a photo was taken. Modern smartphone cameras also embed computational photography metadata — HDR settings, portrait mode info, image stabilization data. EXIF is read by photo management software, maps applications, and image viewers. It is ubiquitous in the photography ecosystem.
EXIF vs. XMP
EXIF is older, more rigid, and camera-focused. XMP is newer, more extensible, and metadata-agnostic. Modern cameras and editors write both. Tools like ExifTool handle both transparently, so users rarely think about the difference. The two standards coexist peacefully in the same file — EXIF in the APP1 segment, XMP also in APP1 or in an app-specific location.
LLMind relationship
LRFS does not compete with EXIF. EXIF covers camera-origin metadata and technical camera settings. LRFS covers AI-semantic metadata — descriptions, entities, structure, lineage. Both standards coexist. A file can carry original camera EXIF data, editorial IPTC keywords, standard Dublin Core fields, and new LLMind semantic layers all in the same XMP packet.