The D5 has been used on the ISS since 2017, including EVAs: * https://en.wikipedia.org/wiki/List_of_cameras_on_the_International_Space_Station https://en.wikip

The D5 has been used on the ISS since 2017, including EVAs: * https://en.wikipedia.org/wiki/List_of_cameras_on_the_International_Space_Station https://en.wikipedia.org/wiki/List_of_cameras_on_the_Interna... The ISS now (also?) has Z9s. So they're both generally known-quantities.