Traditional Culture Encyclopedia - Photography major - Can you help me look at the homework requirements left by the photography teacher?

Can you help me look at the homework requirements left by the photography teacher?

For homework 1, the aperture is set to 2.8 and 22 respectively to take a flower, and the depth of field is different.

In Task 2, the speed is 1/30 and 1/250, which means the speed.

In assignment 3, you are required to have an off-board flash. Put the lamp on the front, side and back of basketball or other objects to take 3 photos, and the flash mode is e-ttl.

Homework 4, the figure is next to the window, measuring the face. The camera is facing the shadow that can't be seen, low-key, and the outdoor sun shines on the white man, high-key.

You need a camera that can control the aperture and shutter, and a flash with off-machine control.