It makes a tiny bit of sense. Early digital cameras still had RAW files, if anything they were more important since the onboard chips for synthesizing JPGs wer

It makes a tiny bit of sense. Early digital cameras still had RAW files, if anything they were more important since the onboard chips for synthesizing JPGs weren't very powerful. At the time, portable storage like Compact Flash or Sony Memory Stick was often formated in good ol' FAT32, so 8.3 file names using only capital letters was a longstanding convention. They were .RAW files, not .raw, in other words, and frequently enough, still are.