I recently received a Nikon D3100 as a gift. My main interest is capturing images of parts of my body for dental imagery, personal 'snaphots' (yes I know a bit unusual with an actual camera), human faces etc..
I have always been very displeased with passport photos as I could never see my facial expression when taken in a studio but this time I have an opportunity to choose what image i take. I have read that this camera can be 'live' controlled from a PC. This might be necessary to see the image i'm capturing.
What I'm mainly concerned about is the basic features that I would need to know to create an appropriate passport photo in terms of focus, lighting and quality.
NOTE: This question is regarding the basic aspects needed to take an appropriate close up photo of the face. The other thread (which is not mine anyway) purely discusses connecting the camera to a laptop display. Also that question was asked 4 years ago and I have just received my camera.