View MOS files in your browser
MOS is the raw format of Leaf's medium format digital backs, the Valeo, Aptus and Credo, made for studio and landscape photographers from the early 2000s. No browser shows it. Filepeek develops it in your browser, without uploading it.
Or drop it anywhere on this page
What you'll see
Your file opens at actual size, or shrunk to fit your screen.
- Actual size, or shrunk to fit
- Drag to pan • Pinch or scroll to zoom
- Fullscreen
- Export • Save as PNG or JPEG
About MOS
MOS is the raw format of Leaf's medium format digital backs, the Valeo, Aptus and Credo, made for studio and landscape photographers from the early 2000s. Leaf joined Mamiya in 2009, and Phase One later took over both.
A MOS is built on TIFF and holds 16 bit sensor data from backs of up to 80 megapixels, with Leaf's own settings.
No browser shows MOS by itself. Filepeek develops it with LibRaw, the open source raw decoder, using the camera's white balance. A file past the device's memory is shown at half size, and Export saves a JPEG or a PNG.
Leaf Raw
.mos
Format
- MIME type
- image/x-raw
- Made by
- Leaf, then Mamiya Leaf
Inside the file
- Holds
- Raw sensor data
- Bit depth
- 16 bit
- Cameras
- Leaf Valeo, Aptus and Credo
- Built on
- TIFF
Opens in every browser
No browser shows MOS by itself. Filepeek develops it with LibRaw in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I open a Leaf raw file?
Drop it on this page or press Peek a MOS. It opens right in your browser, with nothing to install.
Can I convert MOS to JPEG?
Yes. Choose Export, then Save as JPEG.
Why do the colors differ from Capture One?
Capture One develops with its own color profiles. Filepeek develops the raw data neutrally with LibRaw, using the camera's white balance.
Is my photo uploaded?
No. The photo opens inside your browser and never leaves your device.