The student detaches the lens of the DSLR.
text: To detach a lens you have the button on the body, on the right-hand side of the lens.
text: And then you can twist the lens off.
text: This button?
text: Yeah
text: you press the button and while pressing it, you turn the lens.
text: That's the lens cover, you want to put the lens cover back on.
text: And you can turn the entire lens.
text: Perhaps the other way you can turn it.
text: And then you can pull it out.
text: Perfect.