Convert SR2 to G3

The SR2 file extension stands for "Sony RAW 2", a format used by Sony digital cameras to store uncompressed image data. Introduced in December 2005 with the Sony DSC-R1 model, SR2 files capture raw image data directly from the camera's sensor, preserving maximum detail and dynamic range for post-processing. This format is favored by professional photographers for its flexibility in editing and superior image quality compared to compressed formats. SR2 is part of Sony's suite of RAW formats, which also includes SRF and ARW.

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.