About NEF (Nikon Electronic Format)
If you shoot a Nikon in RAW mode, you get NEF files — Nikon Electronic Format, the company's RAW format across its DSLRs and Z-series mirrorless cameras. A NEF stores the sensor data at 12 or 14 bits per channel, in uncompressed, lossless compressed, or lossy compressed variants, with the camera settings carried as metadata rather than baked-in processing.
Photographers keep NEF files as the master copy because nothing is thrown away: white balance, exposure, and Nikon's Picture Control looks are all just suggestions that editing software applies later. That same trait makes NEF useless for direct sharing — phones, browsers, and most desktop apps show either nothing or a small embedded preview.
Convertmaxxing turns NEF into standard image formats entirely in your browser, free and without uploading anything. It cannot save images as NEF — RAW files can only meaningfully come from a camera. Colors here come from a neutral rendering and may not match what Nikon's NX Studio shows.
Strengths
- Complete sensor data at up to 14 bits — the best starting point for editing Nikon shots
- Camera settings travel as metadata, so nothing is permanently baked in
- Lossless compressed variant saves space without discarding image data
Limitations
- Very limited support outside dedicated photo software
- Large files compared with JPEG from the same camera
- Read-only on this site: NEF can be converted from, not to
- The neutral RAW rendering may look different from Nikon's own color processing