What is an ERF file?
ERF stands for Epson Raw Format. It is a raw image format used by Epson digital cameras, such as the R-D1 series.
Like other RAW formats (CR2, NEF), an ERF file contains unprocessed data directly from the camera's image sensor. This provides higher quality and more editing flexibility than compressed JPEG files. Our Online ERF Viewer lets you open these files without needing proprietary camera software.
How to View ERF Files Online
Upload ERF
Drag and drop your .erf file into the viewer.
Process
The tool renders the raw sensor data for display.
Convert
Save the image as a widely supported format like JPG or PNG.
Frequently Asked Questions
How do I open an ERF file?
You can open ERF files using Adobe Lightroom, Photoshop, or Epson's own software. For a quick, no-install solution, use our free online viewer.
Is ERF better than JPEG?
Yes, for editing. ERF files preserve all the data captured by the sensor, allowing for better adjustments to exposure and white balance, whereas JPEG files are compressed and processed in-camera.
Can I convert ERF to JPG?
Yes, this tool allows you to view the raw image and export it as a high-quality JPG or PNG file.