[youpii]

One can really discuss if AF on portraits is a major necessity and I think it all comes down at how dynamic a setting in a portrait session changes. In a studio, with ready lit background and the "portrait chair" one could weld the focus ring ... Out in the wild, photographer and model tend to move. I'm not certain AF will always be better than manual focus - by the way, "better" is what? More precise? Quicker? An aid like optical glasses for people with eye problems? The older I get the more I tend to trust a good AF, especially at night.

 

I also prefer to use AF for portrait but let's remember that some people did take nice portraits in the past with MF lenses:

"Gula's photograph was taken by National Geographic Society photographer Steve McCurry on Kodachrome 64 color slide film, with a Nikon FM2 camera and Nikon 105mm Ai-S F2.5 lens."

https://en.wikipedia.org/wiki/Afghan_Girl