Shazbot

The short version is that there are two images and sidecar/xmp file sandwiched into one file. First is the standard dynamic range image, what you’d expect to see from a jpeg. Second is the gain map, an image whose contents include details outside of SDR. The sidecar/xmp file has instructions on how to blend the two images together to create a consistent HDR image across displays.

So its HDR-ish enough for the average person. I like this solution, especially after seeing the hellscape that is DSLR raw format support.

This isn’t surprising, a user found out how to abuse the API to progress without doing lessons by just submitting the expected parameters last year. If they followed through on reporting to Duo then they’ve had plenty of time to address it. Seems like the mod also found out how vulnerable Duo was and took it to it’s natural conclusion.