What is an ORF file?
ORF is extension of Olympus's RAW file format .orf (.ORF), an ORF file is a RAW photo taken with an Olympus digital camera. The data stored in the ORF file is uncompressed.
ORF files are used to store information of captured images including, camera sensor information, metadata such as EXIF (lenses, focal lengths, shutter speeds, apertures, ISOs).
ORF files store information like white balance, HUE, tone and sharpen, all of this information is stored under instruction format and can adjust these instruction, which in turn can produce a change in the color result of the image.
How to open a ORF file on Windows?
Many apps supports open and edit ORF file on Windows (including free or paid apps). You can try to download Raw Image Extension from Microsoft Store, it is not app, after install you can view ORF file or other extension same as JPEG or PNG on Windows, not only ORF, it supports many type of extension such as CR2, PEF, ARW, MEF, etc.
If you want to convert multiple ORF files to JPEG or PNG for other purpose such as sharing or emailing, you can download ORF to - Image Converter from Microsoft Store. This app convert ORF file to JPG locally on your computer, it do not upload your file to server so your files will be safe.