The size actually far outdid my estimations of how big it will be . . . a 50mm at the size/weight of a 24-70/2.8? No thanks, the 105/1.4 will outperform it for dedicated portraiture and the 50/1.2S is too big for a walk-around for me. My wait for an AF replacement to the 50/1.2 ai-s continues. Oh well, at least modern EVFs have made MF easier than ever. I'm sure the optical performance will be excellent, but that is nothing of note nowadays. I hope the next trend balances modern optical excellence with size. All I personally want for a 50/1.2 (besides AF) over the ai-s is improved contrast in challenging lighting and reduced field curvature.