>>4391961depends on the type of portraits you want to take, headshots are different from upper body or full body or environmental, etc
if you do a headshot with 35mm it will look wonky, because you are so close up, an 85 forces you far enough away that it is not an issue, same thing happens with our eyes
the distortion comes from distance, not focal length, so think of lenses as simply giving you a wider or narrower framing for a given distance
so you stand far enough away to minimize that perspective distortion, and then it just becomes how much of the subject / environment you want to show
i like 28/35 horizontal for environmental portraits, 50 vertical for full body shots, 85 for upper body, and 135 for headshots
