Why the hell is this about equivalence? In terms of I know In case you have a Fuji digicam You can not put a Sony FE 28mm f2 on it anyway. Are you currently about to provide all your Fuji gear as the optically inferior FE lens is less expensive? https://link-fuji18888754.jiliblog.com/84470220/how-link-fuji188-can-save-you-time-stress-and-money