Convert X3F to G3

The X3F file extension, associated with Sigma Digital Camera Raw Image File, is a proprietary format created by Sigma Corporation for cameras with Foveon X3 sensors. X3F files store raw image data, capturing full-color information at each pixel for enhanced color accuracy and detailed post-processing. This format includes metadata, thumbnails, and preview images, offering photographers comprehensive control over their images. While primarily processed with Sigma Photo Pro software, X3F files are also supported by plugins for popular photo editing software like Adobe Photoshop.

The G3 file extension refers to the CCITT Group 3 Fax Image, a standardized format developed by the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as ITU-T. This format was created to efficiently compress black-and-white fax documents for transmission over telephone lines. It employs a method called Modified Huffman Coding for data compression, enabling reduced transmission time and bandwidth usage. G3 was widely adopted in the 1980s and 1990s as the primary standard for fax transmissions, ensuring compatibility across different fax machines and systems.