The conversation between human and AI assistant.
Which one should I choose 50 mm or 40mm prime lens?
What about the aperture of the lenses?
The aperture of a lens refers to the opening that controls the amount of light entering the camera. A lower f-number means a larger aperture and therefore more light. The 50 mm lens typically has a larger maximum aperture than the 40 mm lens, allowing you to achieve smoother bokeh and better low-light performance.