Adding my two cents, the difference between the Nikon NIKKOR Z 40mm f/2 and the Nikon NIKKOR Z 50mm f/1.8 S is massive regarding optical glass quality. The S line uses extra-low dispersion elements that basically kill chromatic aberration. Are you shooting mostly at night where you need that extra stop of light, or is the edge-to-edge sharpness for cropping your priority? Knowing that makes it easier to justify the cost.

Honestly, if you want that S-line magic on a budget, look for a used Nikon NIKKOR Z 50mm f/1.8 S. I switched to it years ago and never looked back; the rendering is just in another league compared to the Nikon NIKKOR Z 40mm f/2.

• The 40mm is fun but soft in the corners.
• The 50mm S is razor sharp wide open. Just grab a used copy and save your cash, you wont regret it.

Honestly, I have been shooting street with the Z system since the Z6 launch and I totally get where youre coming from. That kit lens is decent for daytime, but it just gets muddy when the sun dips behind the Chicago skyline. I have lugged around a heavy bag for years and honestly, the weight starts to really kill the vibe when you are walking ten miles a day. Over the years, Ive realized that having a lens you actually want to carry is more important than having the absolute sharpest glass on paper. Here is the reality of the situation:

• The smaller prime is a total game changer for blending into the crowd without looking like a pro photographer.
• Youre gonna miss shots if the gear is too heavy to reach for quickly.
• The S-line lenses are incredible but they can be a bit bulky for quick, candid moments. In my experience, if you are strictly doing street stuff, the smaller f/2 glass is plenty good enough for web and social media. Youll get that creamy bokeh you are craving without the back pain. Just grab the cheaper option, spend the leftover cash on a nice strap or some extra batteries, and go enjoy your trip. You wont regret the portability when you are weaving through downtown traffic...