Convert X3F to FF

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 Farbfeld (FF) file extension stands for "Farbfeld Lossless Image", a format designed for simplicity and efficiency in parsing and piping image data. Introduced by the Suckless community, Farbfeld stores images in a straightforward, uncompressed format, making it ideal for use with external compression algorithms. This format uses 32-bit RGBA values for each pixel, ensuring lossless quality. Its history traces back to the need for a minimalistic, easily manageable image format that avoids the complexity of integrated compression found in formats like PNG.