raw format

What is a .PEF file?

PEF is Pentax’s raw photo format storing unprocessed sensor data.

Full name
Pentax Electronic File
Developed by
Pentax
Released
2003
Extension
.pef
MIME type
image/x-pentax-pef
Transparency
No

How to open a PEF file

PEF opens in Lightroom and Pentax Digital Camera Utility.

What PEF files are used for

Professional photography

Maximum dynamic range and editing latitude.

Color grading

Recover highlights and shadows non-destructively.

Archival masters

Keep the untouched original alongside exports.

Strengths & limitations

✔ Strengths✖ Limitations
Maximum editing latitudeNo transparency support
Needs raw-capable software

Need more than a conversion?

Remove the background from PEF images, upscale to 4K, or generate new visuals with SharkFoto AI.

Frequently asked questions

PEF is Pentax’s raw photo format storing unprocessed sensor data.

PEF opens in Lightroom and Pentax Digital Camera Utility.

PEF is an unprocessed raw container, so no detail is discarded.

Use SharkFoto's free tools — upload your PEF file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.

No — PEF doesn't store transparency; convert to PNG or WEBP if you need it.