Convert SRF to G3

The SRF (Sony Raw File) is a RAW image file format used by Sony digital cameras, such as the DSC-F828 model, to store uncompressed, unaltered images captured by the camera's sensor. Introduced in January 2004, SRF files preserve high-quality image data, offering photographers greater flexibility in post-processing compared to compressed formats like JPEG. Over time, Sony developed subsequent formats like SR2 and ARW to enhance features and compression methods.

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.