Why the hell is this about equivalence? So far as I do know if you have a Fuji camera You cannot set a Sony FE 28mm f2 on it anyway. Are you presently planning to provide all your Fuji equipment as the optically inferior FE lens is much less expensive? https://linkfuji18887642.onzeblog.com/26987531/5-easy-facts-about-link-fuji188-described