In the picture of classroom sign I used a small f stop of f4 which created a shallow depth of field. In other photos, I used a large depth of field when I photographed the auditorium chairs, where they were more in focus upon which used an f stop of f22 . I used an 800 iso and florissant white white balance.If I were on a point and shoot camera I would keep the flash off and focus on the foreground. I feel as though the grate pictures are the best because just love the way the light shines on the grates and it gives it a nice shine and creates lots of negative space between the grates. I would chose a shallow depth of field to emphasis a certain part of the photo. I would use a large depth of field in a case in which i want the whole pic in focus.