It's the Nikon 50mm f/1.8 prime lens. It retails now at $100-$200, but when I purchased it, it was $99.00. It was the best advice I received when I first started getting serious about my photography.

Best picks - Top quality glass to use with your Nikon Z mirrorless camera, offering improved autofocus and image quality ...

With an AF-S motor, the NIKKOR 50mm f/1.8G will be capable to auto-focus on any camera even the entry level ones which don't offer an AF motor, like the Nikon D3100. It should also make the focusing ...

Central sharpness is very good at f/1.8 and f/2, excellent from f/2.8 through to f/5.6, very good from f/8 to f/16 and fair at f/22. The edges are good at f/1.8 and f/2, very good from f/2.8 to f ...