Why the hell is this about equivalence? So far as I am aware if you have a Fuji camera you can't place a Sony FE 28mm f2 on it anyway. Will you be intending to sell all your Fuji gear since the optically inferior FE lens is less costly? No, https://linkfuji18897642.blogrelation.com/32913952/examine-this-report-on-fuji188