Yongnuo DA DSM WL Pro YN 33mm f/1.4 33mm
A 33mm f/1.4 lens with a 49.5mm full-frame equivalent view and 9-blade diaphragm delivers smooth bokeh, while the ultraquiet digital stepping motor enables fast, silent autofocus. A customizable Fn button, nano multilayer coating, and USB-C port for firmware updates add practical handling and durability. This prime is best for portrait photographers on Nikon Z APS-C cameras who need a lightweight, fast lens for shallow depth-of-field shots.
Snapshot
The 30-Second Version
The Yongnuo YN 33mm f/1.4 is a budget-friendly 50mm equivalent for Nikon Z APS-C with surprisingly good autofocus. Optical quality and bokeh are just average, and there's no weather sealing. At $268, it's a solid value for casual shooters who want f/1.4 without the premium price.
Pros & Cons
Pros
- Bright f/1.4 aperture at a budget price 86th
- Autofocus is fast, quiet, and reliable 66th
- Custom Fn button and USB-C firmware updates
- Compact and lightweight at 370g
Cons
- No weather sealing
- No optical stabilization
- Bokeh quality is mediocre
- Optical performance is just average
The proof
Performance
Autofocus is the standout here. The Digital Stepping Motor pushes AF performance into the 86th percentile of our database, which is genuinely impressive for a lens at this price. It's quiet, quick, and reliable enough for both stills and video work. The 11-element, 9-group optical design with Nano Multilayer Coating delivers solid sharpness, but nothing that'll blow your socks off. Bokeh quality sits at the 38th percentile, so while the f/1.4 aperture gives you blur, the character of that blur is just okay. The 9-blade diaphragm helps keep highlights round, but don't expect buttery-smooth rendering. Minimum focus distance of 396mm gives you decent close-up flexibility, though macro performance is only average.
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 33 |
| Focal Length Max | 33 |
| Elements | 11 |
| Groups | 9 |
| Coating | Nano Multilayer Coating, Anti-Fouling Fluorine Coating |
Aperture
| Max Aperture | f/16 |
| Min Aperture | f/1.4 |
| Diaphragm Blades | 9 |
Build
| Mount | Nikon Z |
| Format | APS-C |
| Weight | 0.4 kg / 0.8 lbs |
| Filter Thread | 58 |
AF & Stabilization
| AF Type | Digital Stepping Motor (DSM) |
| Stabilization | No |
Focus
| Min Focus Distance | 396 |
vs Competition
Against the Sigma Contemporary 18-50mm f/2.8 DC DN, the Yongnuo gives you a brighter aperture and a more natural 50mm equivalent field of view, but the Sigma offers zoom flexibility and better overall optics. The Viltrox AF 13mm F1.4 XF is a wider, more specialized option with similar aperture speed but different use cases. The 7Artisans LITE Series AF35mm F1.8 is the closest direct competitor, and while it's cheaper, the Yongnuo's autofocus is noticeably better. The Tamron Di III VC 28-300mm and Sony E 18-135mm are zooms that trade aperture speed for versatility, so they're really different animals.
| Spec | Yongnuo DA DSM WL Pro YN 33mm f/1.4 33mm | Sigma Contemporary 18-50mm f/2.8 DC DN | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Viltrox AF 35mm f/1.7 XF | Panasonic Leica DG Vario-Elmarit H-ES12035 | Nikon NIKKOR Z 17-28mm f/2.8 |
|---|---|---|---|---|---|---|
| Focal Length | 33mm | 18-50mm | 17-70mm | 35mm | 12-35mm | 17-28mm |
| Max Aperture | f/16 | f/2.8 | f/2.8 | f/1.7 | f/2.8 | f/2.8 |
| Mount | Nikon Z | Sony E | Sony E | Fujifilm X | Micro Four Thirds | Nikon Z |
| Stabilization | false | false | true | true | true | false |
| Weather Sealed | false | true | true | false | true | true |
| Weight (g) | 370 | 290 | 544 | 180 | 306 | 450 |
| AF Type | Digital Stepping Motor (DSM) | stepping motor | RXD | STM (Stepping Motor) | Autofocus | Stepping Motor |
| Lens Type | prime | zoom | zoom | prime | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Yongnuo DA DSM WL Pro YN 33mm f/1.4 33mm | 85.5 | 40.1 | 66.4 | 63.5 | 56.3 | 44.2 | 33.6 | 36.1 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 85.5 | 84.4 | 85.4 | 91.5 | 81.2 | 86.3 | 78.6 | 36.1 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.8 | 88.9 | 67.3 | 85.4 | 90.3 | 86.3 | 89.6 | 81.3 |
| Viltrox AF 35mm f/1.7 XF Compare | 85.5 | 95.7 | 86.7 | 97.2 | 65.2 | 95.3 | 33.6 | 81.3 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.8 | 84.4 | 84.6 | 50 | 85.7 | 86.3 | 80.6 | 96.6 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 85.5 | 88.9 | 74.2 | 85.4 | 87.5 | 86.3 | 67.9 | 36.1 |
Price
Value & Pricing
At $268 USD, this lens is priced aggressively against the Sigma Contemporary 18-50mm f/2.8 DC DN and other APS-C primes. You're getting f/1.4, which is a full stop faster than most zooms in this range, and the autofocus performance punches well above the price tag. The trade-off is build quality and optical refinement. If you're a hobbyist or content creator on a budget, this is a solid deal. If you're pixel-peeping or shooting in harsh conditions, you'll feel the compromises.
Read more
Overview
The Yongnuo YN 33mm f/1.4 DA DSM WL Pro is a budget prime for Nikon Z APS-C shooters who want that classic 50mm look without spending Sigma money. At 370g with a 58mm filter thread, it's compact enough to live on your camera full time. The f/1.4 aperture is the headline feature here, promising shallow depth of field and low-light capability at a price that undercuts most first-party options.
But this is Yongnuo, so you're getting some compromises. No weather sealing, no stabilization, and the optical performance lands squarely in the middle of the pack. The autofocus is actually a bright spot, and the custom Fn button plus USB-C firmware updates show Yongnuo is thinking about real-world usability.
Common Questions
Q: Does this lens work on full-frame Nikon Z cameras?
It's designed for APS-C sensors, so on a full-frame Z body you'll get heavy vignetting or crop mode. Stick with APS-C bodies like the Z50 or Z fc for the best results.
Q: Is the autofocus quiet enough for video?
Yes, the Digital Stepping Motor is one of the quietest AF systems we've tested at this price point. It's a solid choice for run-and-gun video work.
Q: How does the bokeh look at f/1.4?
You'll get plenty of background blur, but the quality of that blur is just average. The 9-blade diaphragm keeps highlights round, but don't expect the creamy rendering you'd get from pricier glass.
Who Should Skip This
Skip this if you shoot in rain, snow, or dusty environments, since there's no weather sealing and the build quality is only middle of the pack. Also skip it if you're a bokeh enthusiast chasing that dreamy, creamy background blur, because the rendering here is just okay. If you need stabilization for handheld video or low-light stills, look elsewhere, since this lens relies entirely on your camera body's IBIS.
Verdict
This lens is for Nikon Z APS-C shooters who want a fast, affordable 50mm equivalent prime and don't mind skipping weather sealing and stabilization. It's a great entry point into f/1.4 photography without breaking the bank. If you shoot mostly in good conditions and value autofocus speed over optical perfection, you'll be happy. If you need rugged build quality or creamy bokeh, keep looking.