Pentax Electronic File (.pef)
The PEF (Pentax Electronic File) is a raw image file format used by Pentax digital cameras. It contains unprocessed data directly from the camera's image sensor, allowing for greater post-processing flexibility and higher-quality images. Introduced by Pentax, this format retains more image information compared to compressed formats like JPEG, making it popular among professional photographers. PEF files can be opened and edited with various software, including Adobe Photoshop and Pentax's own Digital Camera Utility.