PEF (Pentax Electronic File)

The PEF Raster image file format

If you are using a Pentax digital camera, you have the option to take images not only in the common JPG format, but also as PEF. This is the uncompressed RAW image format provided by Pentax. The RAW image format is deprecated since Pentax changed it's RAW format from PEF to DNG.

Technical details of PEF files

As all camera RAW formats, PEF image files store information about color, lightning, etc. exactly like they are captured by the camera's sensor. No compression or adjustment of the image information takes place. It is based on the TIFF file format. However, not all PEF formats are identical. Depending on the Pentax camera model, the files may store image information differently. Thus, not all PEF files can be reliably opened by the same program.

More information about the PEF file format

File extension .pef
File category Raster image
Associated programs ACD System ACDSee 18
ACD Systems Canvas 15
Adobe Photoshop CC
Adobe Photoshop Elements 13
Corel PaintShop Pro X6
File Viewer for Android
Google Picasa
MacPhun ColorStrokes
MAGIX Xara Photo & Graphic Designer 9
Pentax Photo Browser or Photo Laboratory
Useful links More information about camera RAW image formats
Developer Pentax