Compared to a kit lens that might have a maximum aperture of around 3.5 or 5.6, the 50mm has a really wide maximum aperture of f/1.8. This means it’ll be great shooting in lower-light situations and will create the cinematic shallow depth of field.
For the money, you can’t get more bang for your buck. Because this lens is so simple and contains so few lens elements, the manufacturing price is lower, making for a killer bargain.
What you can do with the lens?
Talking head interview shots, Interesting b-roll angles, Shooting in low-light situations, Capturing lifestyle travel footage.
The new EF 50mm f/1.8 STM fixes pretty much every problem its predecessor had. In fact, across the board, the 50/1.8 STM is just a much better lens.
Image quality for this lens is impressively good. Canon has been refining the basic design of a 6 element 5 group 50 mm lens for more than 30 years now. A result of this continued refinement and engineering is a very sharp lens.
Bottom Line: I’ve been thoroughly impressed by this lens.