{"id":"image-x-sony-srf","mimeType":"image/x-sony-srf","name":"Sony SRF Raw Image","shortName":"Sony-SRF","category":"Photography \u0026 Raw Imaging","extensions":[".srf"],"description":"The image/x-sony-srf MIME type represents the Sony SRF format, the very first proprietary raw image format developed by Sony for its early prosumer digital cameras. Introduced in the early 2000s with flagship Cyber-shot models like the DSC-F828, the SRF format predates both the transitional SR2 format and today's modern ARW standard. Built on a standard TIFF container specification, an SRF file stores uncompressed pixel data exactly as it was captured by the camera's CCD image sensor. While it is completely obsolete and no longer used in modern Sony hardware, the format remains broadly supported by professional raw processing engines for archival and restorative purposes.","seo":{"title":"image/x-sony-srf MIME Type | Developer Reference for Sony SRF","description":"Complete reference for the image/x-sony-srf MIME type: Sony SRF RAW image format, legacy Cyber-shot cameras, TIFF structure, and raw file detection.","faqs":[{"question":"What is a Sony SRF file?","answer":"An SRF file is the original, legacy proprietary raw image format developed by Sony. It was utilized primarily in early 2000s high-end Cyber-shot cameras, such as the 8-megapixel DSC-F828, to store unprocessed sensor data."},{"question":"What is the difference between Sony SRF, SR2, and ARW?","answer":"They represent the chronological evolution of Sony's raw formats. SRF was the first generation (early 2000s). SR2 was a brief transitional format used in the mid-2000s. ARW (Alpha Raw) is the modern, current format used across all contemporary Sony mirrorless and DSLR cameras."},{"question":"How do I open an SRF file today?","answer":"Standard web browsers and basic OS image viewers cannot render SRF files natively. However, they can still be opened and edited using modern raw processors like Adobe Lightroom, Capture One, RawTherapee, or Sony's Imaging Edge software."}]},"index":{"compression":["Uncompressed"],"browserSupport":{"score":1,"label":"None"},"commonUses":["Legacy Sony Cyber-shot Photography","Non-destructive Image Post-Processing","Early 2000s Raw Imaging Archival"]},"technical":{"magicBytes":{"hex":"49 49 2A 00","ascii":"II*\\x00"},"container":"TIFF-based (Proprietary)","compressionAlgorithm":["None"],"colorDepth":["12-bit (Per Channel)"],"transparency":false,"animation":false,"metadata":{"exif":true,"xmp":true,"iccProfile":true},"alphaChannel":false,"progressiveLoading":false,"hdrSupport":true},"history":{"developer":"Sony Corporation","released":"2003","specification":"Proprietary (Reverse-engineered by the community / LibRaw)"},"browserSupport":{"chrome":false,"chromeVersion":"None","firefox":false,"firefoxVersion":"None","safari":false,"safariVersion":"None","edge":false,"edgeVersion":"None","internetExplorer":false},"softwareSupport":[{"name":"Sony Imaging Edge Desktop","logo":""},{"name":"Adobe Lightroom Classic / CC","logo":""},{"name":"RawTherapee","logo":""},{"name":"Capture One","logo":""}],"conversion":{"convertTo":["dng","jpeg","tiff","png"],"convertFrom":[]},"developer":{"httpHeaders":[{"header":"Content-Type","value":"image/x-sony-srf"}],"htmlAccept":"image/x-sony-srf, .srf","fileDetection":["SRF files are built on the standard TIFF specification and therefore typically begin with the standard little-endian (49 49 2A 00) magic bytes.","Because they share this exact header with standard TIFF files and many other raw formats, MIME sniffers will almost universally misidentify SRF files as 'image/tiff'.","To definitively detect an SRF file programmatically, developers must parse the TIFF header directories and examine the EXIF MakerNote to confirm the Sony manufacturer signature and legacy camera model."]},"prosCons":{"pros":["Retains perfectly raw, unprocessed sensor data from legacy early-2000s cameras, allowing modern raw processors to extract much better dynamic range and color than the camera's original internal JPEG engine could","Utilizes a standard TIFF container structure, ensuring broad compatibility with community-maintained open-source decoding libraries like LibRaw"],"cons":["Completely obsolete format that has long been abandoned in favor of ARW","MIME detection via magic bytes is unreliable due to TIFF header spoofing, requiring deeper EXIF inspection for accurate routing","Cannot be natively viewed in web browsers or standard operating system image viewers without specialized decoders"]},"specifications":{"url":"https://www.libraw.org/","rfc":"","mimeAliases":["image/srf"]},"developerSnippets":{"python":"import magic\n# Libmagic will identify SRF files as standard TIFFs due to the shared 49 49 2A 00 header\nprint(magic.from_file('vintage.srf', mime=True)) # Outputs 'image/tiff'","nodejs":"const FileType = require('file-type');\nconst type = await FileType.fromFile('vintage.srf');\nconsole.log(type?.mime); // Usually resolves to 'image/tiff'. You must rely on the .srf extension for precise routing.","go":"import (\n    \"bytes\"\n    \"net/http\"\n    \"strings\"\n)\n// Native Go HTTP detection reads the TIFF magic bytes and returns 'image/tiff'.\n// You must explicitly check the filename extension to infer Sony SRF intent.\n// isSRF := strings.HasSuffix(strings.ToLower(filename), \".srf\")","php":"$mime = mime_content_type('vintage.srf');\necho $mime; // Standard PHP setups will resolve this to 'image/tiff' based on the file header."},"relatedFormats":["sony-sr2","sony-arw","dng","tiff"]}