.PEF File Extension

File Type 1

Pentax Electronic File

Developer Pentax
2.7  |  24 Votes
Category Camera Raw Files
Format Binary

What is a PEF file?

A PEF file is a raw camera image created by Pentax digital cameras. It stores image information exactly how it was captured by the camera's CCD sensor, with no compression or color adjustment. Professional photographers typically use PEF files because they store higher-quality images.

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Screenshot of a .pef file in Microsoft Photos 2020
PEF file open in Microsoft Photos 2020

PEF files are saved in the Pentax Electronic format utilized by various Pentax camera models. Pentax cameras may store images in slightly different variations of the format. For example, images saved in the Pentax Electronic format may also be saved with a .PTX file extension.

The PEF format is one of many raw image formats utilized by various camera manufacturers. Other raw file types include:

How to open a PEF file

You can open and edit PEF files with various image editing programs, including the software bundled with Pentax digital camera purchases. You can also open PEF files with Microsoft Photos (bundled with Windows) and Apple Preview (bundled with macOS).

Some third-party image editors that support PEF files include Microsoft Photos (bundled with Windows), Adobe Photoshop (Windows and macOS), ACD Systems ACDSee (Windows), and Corel PaintShop Pro (Windows).

Open and view .PEF files with File Viewer Plus.Free Download

Programs that open or reference PEF files

Updated October 6, 2021
File Type 2

PEF Braille Book File

Developer DAISY Consortium
2.0  |  1 Vote
Category eBook Files
Format Binary

File created in the Portable Embosser Format (PEF), an XML format used to store braille books in digital form; includes unambiguous embossing specifications; enables braille books to be stored and shared in an unambiguous exchange format.

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PEF was developed to handle some cases of ambiguity from other braille formats, such as ASCII braille.

PEF files can be opened and created using Braille Utils, a Java library for PEF manipulation. PEF files can also be generated from .ODT documents using odt2braille, a plugin for OpenOffice.org 3.0 or later.

Programs that open or reference PEF files

Updated June 16, 2011

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