Definitions for "FPX"
The lash image format was developed by Kodak but is now governed by an independent organization called the Digital Imaging Group. Programs for viewing this format are available for a few different platforms. An extended version of this format can also handle audio, but this variant is not too widely supported at this time.
The FlashPix format
Flashpix, a file format that is 8-24 bit depth and uncompressed. Developed by Kodak. Flashpix can be compressed and audio can be embedded in images. It supports text fields, stores various resolutions in one file, has consistent color, but is not supported by most software.