Nikon NIKKOR Z40mm f/2 (SE) Review

At a mere 170g, the Z 40mm f/2 SE is one of the lightest full-frame primes you can buy, and its f/2 aperture and beautiful bokeh make everyday photos pop. It’s not the sharpest optic in Nikon’s lineup—it trails the S-line glass—and the missing hood plus occasional AF sluggishness are real, but the overall package is a killer value. If you want a compact, retro walk-around lens for your Z camera, this is it.

The Nikon NIKKOR Z 40mm f/2 (SE) is all about that perfect everyday prime. At just 170g, you’ll forget it’s even on your Z camera, yet its full-frame coverage and f/2 aperture dish out creamy bokeh and a natural 40mm field of view that’s great for street photography. Our data puts its photography score at a solid 54.6, with the lens doing its best work in product and general shooting—wedding and event work is a bit softer at 45.8. The retro styling, complete with knurled rings and a silver band, just makes you want to pick up the camera and shoot.

But it’s not all sunshine. While autofocus lands in the 71st percentile, meaning it’s quick enough for casual snaps, it can get pokey in low light compared to the snappier 28mm SE. There’s zero optical stabilization, so video performance sinks to our 21st percentile, making this very much a stills-first lens. And oddly, our user sentiment score sits in the bottom 15% of lenses, but that seems driven more by marketplace mix-ups than the lens itself—people genuinely love the images it produces once they actually get the right box.

This little lens puts in a respectable shift. Sharpness isn’t S-line territory—you’ll see some fall-off at the edges wide open—but for a sub-$300 full-frame prime, the rendering is beautiful. The 9-blade rounded diaphragm helps create that soft background separation owners rave about, and the f/2 aperture gives you decent low-light ability. Autofocus, while above average overall, does a nice job with Eye AF and subject detection on modern Z bodies, but there’s a noticeable step back from the 28mm SE in speed and confidence when the lights dim.

Our benchmarks mirror real-world shooting: it’s a champ for general photography, scoring 54.6, and does fine for product work (51.5). Where it stumbles is anything video-related—that 25.8 YouTube score and a video percentile in the low 20s tell you this isn’t a hybrid lens. No stabilization means hand-held clips are a jittery mess unless your camera body picks up the slack. For stills, though, the 40mm perspective combined with the fast aperture makes it an instantly likeable walk-around companion.

With a street price that can dip as low as $257 from Amazon, the 40mm f/2 SE is an absolute steal for a full-frame Z prime. The MSRP hovers around $300, but we’ve seen third-party sellers jack it up to nearly $50,000—so stick to reputable stores to get the real deal. For the money, you’re getting a lens with character, a wide aperture, and a design that makes you smile every time you mount it. It’s one of the best value picks in the Z ecosystem right now.

The Z 40mm f/2 SE exists in a tricky spot. Nikon’s own S-line 35mm f/1.8 and 50mm f/1.8 outclass it in sharpness and build, but they’re heavier, bulkier, and cost twice as much. The standard 40mm f/2 non-SE is optically identical and cheaper, but you lose the retro charm. If you’re cross-shopping, the Sony Alpha a6400 with a compact prime is a crop-sensor alternative, though you sacrifice full-frame depth of field. For Z shooters who want something small and stylish without breaking the bank, the SE makes a strong case. Just know that you’re trading a little optical perfection for portability and looks.

If you’re a pixel peeper who demands edge-to-edge tack sharpness for high-resolution bodies, look at the Z 50mm f/1.8 S instead—this lens just isn’t in the same league. Videographers who rely on handheld shooting will also be let down by the lack of stabilization and sub-par video scores. And if you already own the standard 40mm f/2, the SE doesn’t offer any optical upgrade—it’s purely cosmetic.

The Nikon Z 40mm f/2 SE is the kind of lens that makes photography fun again. It’s tiny, it’s gorgeous, and for under $300, it spits out images with real character. Unless you’re cropping in to 200% or shooting professional video without a gimbal, this lens will live on your camera. We’d easily recommend it as a first prime or a daily driver for any Z shooter who values the experience as much as the output.