Four of my AP chemistry students
D300 30mm f/2.8 1/125s ISO 500
D300 30mm f/5.6 1/800s ISO 200
D200 10.5 f/9.5 1/320s ISO 100
D200 10.5 f/8.0 1/400s ISO 100
D200 10.5 f/8.0 1/320s ISO 100
D200 10.5 f/8.0 1/320s ISO 100
D200 10.5 f/8.0 1/500s ISO 100
D200 10.5 f/2.8 1/15s ISO 640
D200 18-200 18mm f/8.0 8/1000s ISO 100