How to Measure real life Measurements in Photoshop?
I recently got a question from one of my student and he is a dentist.
He needs to take a patient's photo, open in Photoshop and them measure some points in the photo and his questions was
" How can I make sure the measurements I'm talking represent the real world measurements?"
What settings or tools do I need to configure to be able to do this?
I really wasn't sure what to advise him, so can anyone help me with this?