Convert PEF to PJPEG

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.

The PJPEG (Progressive JPEG) is a file extension for images that enhances the standard JPEG format by displaying images in successive waves of increasing detail, improving the user experience during slow network conditions. The JPEG stands for "Joint Photographic Experts Group", the organization that developed the standard in 1992. PJPEG is particularly useful for web applications, as it allows images to appear more quickly and progressively refine in quality, rather than loading from top to bottom like baseline JPEGs.