Upload & Sell: On
Depends upon the system. I've got a 135mm f2 Canon I like for portraits, but getting eyes in proper focus wide open is a chore. Might be better to focus manually, if you've got focus peaking or another focusing aid, or perhaps shoot a series with minor distance changes by swaying back and forth to let the odds favor a properly sharp one. Personally, I'd just stop down a bit as the simplest way.