Snap view under perspective mode

Hi all,

When i activate the perspective (say when i am trying to sculpt a portrait), what would be an ideal focal length to use? in photography I understand it is about 85mm… is it the same with sculpting?

Second question… i notice that when i click on the snap view icon under perspective mode, it will snap the view back change to Orthogonal view and i have to click on perspective mode again. Is there a way for the snap view to maintain the mode? or i have to add my own views to control this?

Thank you.

Sorry, i just found out how to disable the snap view to stay in perspective. just toggle off the orthographic in the setting. please ignore this. thank you