Diagrams Of A Digital Camera Please Tell Me Measure Of Zoom And Distance For Taking Personal Photo With Digital Camera?

Please tell me measure of zoom and distance for taking personal photo with digital camera? - diagrams of a digital camera

I take personal pictures of someone, but the picture must be at least 2 cm * 2 inches
The image must be the entire face, neck and shoulders contain the applicant to show a neutral expression with no smile and eyes and focused on the camera face.
The picture should be no body below the shoulders of the applicant
The height of the head (from the top of the head, including hair in the bottom of the chin measured) should be the entire height of the image between 50% and 69%. The eye height (measured from the bottom of the picture at eye level) must be between 56% and 69% of the height of the image. The following chart shows the measurements on an image of adequate supply