Convert SR2 to PBM

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 PBM (Portable Bitmap) file extension, part of the Netpbm project, originated in the late 1980s to facilitate efficient and portable graphics file interchange. Primarily, PBM files are used to store monochrome bitmaps in a simple ASCII text format, ensuring easy compatibility across different systems and platforms. This format supports only black-and-white imagery, making it particularly useful in scenarios where simplicity and minimalism are prioritized, such as in Unix environments for bitmap manipulation and transfer. Its historical significance lies in promoting a standardized approach to bitmap graphics in early computer technology.