X3F (RAW) to HDR Converter
Convert your x3f files to hdr online & free
Sigma Camera RAW Picture File
Radiance RGBE image format
How to convert X3F to HDR
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to hdr"
Choose hdr or any other format you need as a result (more than 200 formats supported)
Download your hdr
Let the file convert and you can download your hdr file right afterwards