This photo is shot on f1.2 and notice how Charles earring is in focus but his EYE IS NOT! If you zoom in as I have did you can see. This is not ideal and is a reminder / a LESSON LEARNT that i need to shoot at at least f2 unless i am prepared for fall out if the model moves, or can clinically set focus to the eye and am in a more controlled setting with no moving of me or the subject (i.e. studio).
The settings for this photo were: 56mm lens, ISO 160, f1.2 and 1/1100, and I was standing on a stall to be more eye level as I am a shortie. Some photos did work on this setting and the eyes are tack sharp. But it is a big ask of luck when shooting from across the street to get that consistently.
Learning Portrait Photography 