After the huge response to Black Lives Matter in the last month, camera companies have made it known to me that they have been dropping the terms "master" and "slave" from their photographic lexicon. Canon dropped the terms in 2017, while Nikon let them go in the early 2000s. Now, Fujifilm has joined them in dropping the use due to the negative racial connotations.
I spoke recently with Fujifilm about their use of "master" and "slave" terms, and they initially stated that there was no existing policy in relation to the terms and their historic use in a photographic context. However, after further conversation with Fujifilm Headquarters, there was an update on the situation. Here's what a Fujifilm spokesperson had to say on the matter:
Fujifilm plan to phase out the use of these terms for all our future products. The decision to make sure that future products in development will not use these terms was made recently.
I'm not sure their decision to phase out the terms came after the global response to Black Lives Matter or whether it was due to following suit after both Canon and Nikon both stated that they'd officially dropped the terms years ago. Either way, it seems that all future Fujifilm photography kit will not feature the terms, presumably in favor of other terms that have already been suggested by camera companies and the public, including "remote" and "commander".