File format · RAW

.MEF — Mamiya (RAW) Electronic Format (TIFF-based)

Mamiya (RAW) Electronic Format (TIFF-based). A RAW image format used by Mamiya cameras.

.mef
File extension
RAW
Type
R/W
ExifTool support (R/W/C)

What is a .mef file?#

Mamiya (RAW) Electronic Format (TIFF-based). A RAW image format used by Mamiya cameras.

Made by: Mamiya.

How to open and convert it#

Open & edit: Adobe Lightroom / Camera Raw, Capture One, DxO PhotoLab, darktable and RawTherapee (free), or the manufacturer's own free software. Windows and macOS preview most RAW formats natively after updates.

Convert: Adobe DNG Converter (free) turns proprietary RAW into DNG; any RAW editor exports JPEG or 16-bit TIFF.

See all Mamiya cameras.

Read metadata: exiftool file.mef — see the EXIF tag reference.

Other RAW formats#

.3fr.arq.arw.cr2.cr3.crm.cs1.czi.dcr.dng.erf.fff.gpr.iiq.k25.kdc.mos.mrw.nef.nrw.pef.r3d.raf.raw

Frequently asked questions#

What opens .mef files?

Open & edit: Adobe Lightroom / Camera Raw, Capture One, DxO PhotoLab, darktable and RawTherapee (free), or the manufacturer's own free software. Windows and macOS preview most RAW formats natively after updates.

Convert: Adobe DNG Converter (free) turns proprietary RAW into DNG; any RAW editor exports JPEG or 16-bit TIFF.

See all Mamiya cameras.

Is .mef a RAW file?

Yes — it stores minimally processed sensor data from Mamiya cameras.

Last updated October 03, 2026 · How we calculate · Sources