I an currently selling my 50mm 1.8 and 55-250mm to purchase a new prime. I am looking at the 28mm 1.8, 50 1.4, and 85 1.8. I like to do portraits wide open or near it...but atm the nifty fifty's auto focus isn't working out for me often enough. I heard great things about the 85mm, some good some bad about the focus motor on the 50mm, and not much on the 28mm. I am leaning towards the 85mm atm. If anyone could help me out on this i'd appreciate it. Thanks!