MEF is Mamiya's RAW format, used by their medium format digital camera systems to store unprocessed sensor data for high-end commercial, fashion, and fine art photography. When a delivery or archival file needs to retain maximum quality rather than the compressed result a JPG export would produce, PNG is the better target, preserving every bit of detail recovered from Mamiya's large sensors.
Converting MEF to PNG demosaics the sensor data and writes a lossless file, making it the practical choice when archival quality matters more than minimizing file size.
- Install Turbo Raw Image Converter on your Windows PC.
- Open the app and select Batch Mode for an entire shoot, or Individual Mode for a single MEF file.
- Drag your MEF files or folder into the app window, enabling recursive folder scanning if needed.
- Set the "From" format to MEF and the "To" format to PNG.
- Click Convert. Lossless PNG files are written to your output folder, fully offline.
- Native support for Mamiya's MEF RAW format
- Lossless PNG output preserves full medium format detail
- Bulk-convert an entire medium format shoot in one batch
- Runs fully offline, keeping unreleased commercial work private
- Multi-core processing for fast handling of large medium format files
Why choose PNG instead of JPG for MEF exports?
PNG is lossless, making it the better choice when preserving maximum image detail for archiving or client delivery matters more than minimizing file size.
Which cameras produce MEF files?
MEF is Mamiya's RAW format, used by their medium format digital camera systems.
Can I convert an entire shoot of MEF files at once?
Yes, Batch Mode processes an entire folder of MEF files in one pass, including nested sub-folders if recursive scanning is enabled.
Ready to convert your RAW camera files offline, in bulk, with full privacy?