In order to modify the light coming into a camera lens, you should add: D. Refraction.
What is a camera lens?
A camera lens can be defined as a transparent optical instrument that is used in conjunction with a digital camera, so as to refract rays of light coming into the lens.
This ultimately implies that, a refraction when installed or added to a camera or device, it helps to modify the light coming into the lens and produce a real image.
Read more on lens here: brainly.com/question/1503574
