What is a .MEF file?
MEF is Mamiya’s camera RAW format. Opened in Adobe Lightroom.
- Did you know
- MEF is Mamiya’s “Mamiya Electronic Format”, capturing unprocessed sensor data from its high-end medium-format digital cameras.
- Like most camera raw formats, the MEF file is built on the TIFF structure, storing the sensor data in tagged image directories.
- After Mamiya and Leaf were brought together under Phase One, both MEF and Leaf’s MOS files ended up handled by the same Capture One software.
- MEF keeps the image data raw and uncompressed so a photographer can process it later with no loss of quality.
- What Analyser shows you
- Open camera RAW files from Sony (ARW), Canon (CR2, CR3, CRW), Nikon (NEF, NRW), Fujifilm X-Trans (RAF), Sigma Foveon (X3F), Olympus (ORF), Panasonic (RW2), Pentax (PEF), Adobe DNG and many more. Reads full EXIF and lens data, the true sensor resolution, GPS and histograms, recovers the Sony and Nikon shutter actuation count, and develops the RAW - decoding the sensor to a full-resolution image, or extracting the embedded preview when a true demosaic is not available.
- Open a .MEF file
- Drag a .MEF file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.