Convert X3F to PHM

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 PHM file extension stands for Portable Float-map Image (16-bit half), a format used for storing High Dynamic Range (HDR) images with 16-bit half-precision floating-point values. This format is particularly useful in applications requiring precise color representation and extensive dynamic range, such as computer graphics, image processing, and scientific visualization. Originating from the Portable FloatMap (PFM) format, PHM was developed to provide a more efficient storage solution by utilizing half-precision floats, thereby reducing file size while maintaining significant detail and accuracy.