Why the hell is this about equivalence? As far as I do know When you have a Fuji digicam you can't set a Sony FE 28mm f2 on it anyway. Are you currently about to offer all of your Fuji gear since the optically inferior FE lens is less costly? https://fuji18843209.goabroadblog.com/26664508/how-fuji188-can-save-you-time-stress-and-money