It was earlier than that. I remember a relative owning an Apple QuickTake in the mid 90s and Wikipedia reckons they went on sale in ’94: https://en.wikipedia.org/wiki/Apple_QuickTake . I personally had a Samsung digital camera in 1998; it took a max of 128Mb SmartMedia cards.
I sold cameras from 90-91 and we were selling the first DSLR during that period. Unfortunately, I don't remember the details, just that we referred to it as "The Brick" because it weighed 2-3 times as much as the next comparable SLR, cost even more, and the pictures weren't nearly as good.