A 50mm 1.8 prime lens is not required – but…

A 50mm 1.8 is always a good idea. It’s a prime lens, not a variable focal length, which makes it compact. It also is sharp, bright, and relatively inexpensive. A 50mm makes it easy to work in low light, and it catches less flare from backlight. But the lens is not required for class. The kit lens that comes with the camera can work.