I've never recommended a 2-hour podcast segment to anyone before. Hell, I don't think I've ever listened to a 2-hour show before.
But if you're interested in digital photo formats, the future of photo file compression, industry standards and the quandary of proprietary RAW file formats for every camera brand, you should check out episode 51 of This Week in Media.
TWIM usually covers the film industry from the camera operators' or special effects persons' point of view. This week it's all about digital photo formats, and the status of Microsoft's HD Photo format.
I'm no math scholar, but I could keep up with the discussion as MS's Bill Crow explained some of the limitations of JPEG, TIFF, RAW and other file formats. I was also able to keep up when he got into a description of the algorhythm used in the new format, and how it allows for more information to be maintained about what the camera's sensors picked up.
The payoff at the end of the show (okay, it's only 1 hour, 53 minutes, not the full two hours) is when they talk about Photosynth, a cool tool Microsoft is developing to analyse and piece together photos from different angles, based on the grouping of objects or surfaces in different photos that are identified to help the tool place the image spatially in a 3-D viewing light table.