Candid vertical smartphone photo taken by a student sitting in the third row of an ordinary American university classroom, over the shoulders of two students in front (a blonde girl in a white t-shirt, a guy in a grey hoodie). At the front a grey-haired professor in his 60s wearing a navy polo shirt stands next to a desk with an open laptop and a black backpack, projector screen behind him showing a blank slide. Fluorescent ceiling lights, beige walls, slightly washed-out phone camera colors, realistic amateur photo, no text.
