Looking to turn a JPEG into a ORF file? Here's the honest answer — and what actually works instead.
You can't convert JPEG to ORF. ORF is a camera's own RAW format — it only ever comes out of the camera.
ORF is the raw sensor data a Olympus camera writes at the moment of capture. It's produced by the camera's own hardware and firmware — software can read it, but nothing can manufacture a genuine ORF from a finished JPEG.
Your JPEG is a developed, final image. The extra sensor information a ORF carries — wider dynamic range, full color depth, untouched highlights — was discarded when the photo was first saved, and can't be put back.
ORF is proprietary to Olympus. Even other RAW formats (NEF, ARW, RAF…) aren't interchangeable with it — there is no universal "save as RAW" that produces a real ORF.
Every real RAW file is one of these camera-maker-specific formats, written by the camera itself:
JPG (JPEG) is a lossy raster format that compresses photographs into small files by discarding detail the eye barely notices — the most widely used photo format on the web and in cameras.
How to open JPG opens in every browser, image viewer and editor with no special software.
Full JPEG format guideORF is Olympus/OM System’s raw photo format from OM-D and PEN cameras.
How to open ORF opens in Lightroom, Capture One and OM Workspace.
Full ORF format guideLossless and uncompressed — ideal for editing, archiving and print.
JPEG → TIFFLossless with transparency — perfect for graphics, logos and screenshots.
JPEG → PNGA small, universal photo format that opens everywhere.
JPEG → JPGConvert your ORF and other camera RAW files to JPG, PNG or TIFF.
Open the converter