How to view a .MEF file online
No app, no account, no upload.
Open your .MEF
Drag a .MEF file straight from your memory card onto the viewer, or choose it from your device. It's read right here, so even a 60 MB original opens without uploading.
View the photo and settings
We show the largest preview the camera saved, with shutter speed, aperture, ISO, lens, date, location and a histogram.
Save a JPG
Export the preview as JPG, PNG or WEBP to share it right away. Rotation from the camera is applied.
What is a .MEF file?
Everything worth knowing about Mamiya ZD MEF image file.
.MEF files are raw image files captured by Mamiya digital cameras. They contain unprocessed image data directly from the camera's sensor, preserving high levels of detail for post-processing. These files can be opened and edited using various photography software, including Adobe Photoshop Camera Raw, PaintShop Pro, Zoner Photo Studio, and darktable.
Programs that open .MEF files
- Windows
- PaintShop Pro, ACDSee, FastPictureViewer Professional, Adobe Photoshop Camera Raw, Zoner Photo Studio, Helicon Filter
- macOS
- Adobe Photoshop Elements, Adobe DNG Converter
- Linux
- darktable
| Developer | Mamiya |
|---|---|
| Category | Images |
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Frequently asked questions
Is my .MEF file uploaded?
No. The viewer reads your .MEF file. RAW files are big and personal, so they never leave your device.
Is this the real RAW image?
It's the full-size JPEG preview the camera stored inside the RAW file, which is what the camera displays. It has the camera's own colors and white balance. Developing the raw sensor data with your own settings is coming soon.
Why is the preview small for my camera?
Some older cameras (and Sigma, Kodak and Minolta models) only embed a small thumbnail. The panel tells you the preview size and how it compares to the sensor.
Where does the location come from?
From the GPS data your camera or phone saved in the file. If you share the photo, remember this data travels with the original RAW.
Can I convert RAW to JPG here?
Yes: open the file and use Save as JPG. You'll get the camera's preview in full quality. For edited exports with your own exposure and color, use a RAW editor until our developer arrives.
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