Sirui Sirui Aurora 35mm f/1.4 Lens (L-Mount) Review

The Sirui Aurora 35mm f/1.4 is a compact, affordable prime lens for L-Mount cameras that delivers exceptional image quality and beautiful bokeh. Its autofocus is just average and it lacks weather sealing, but for portrait and street photographers on a budget, it's a compelling option.

If you're a Panasonic or Sigma shooter looking for a fast, compact 35mm prime, the Sirui Aurora 35mm f/1.4 is a new option on the block. For about $550, you get a bright f/1.4 aperture in a full-frame L-Mount lens that weighs under 500 grams. It's a classic focal length that's great for street photography, environmental portraits, and low-light work. While Sirui is known for its cine lenses, this is one of their first serious autofocus photo lenses, so there are some questions about how it stacks up against the established players.

The optical performance is where this lens really shines. It lands in the 90th percentile for optics in our database, and the bokeh quality is in the 97th percentile. That 13-blade aperture creates beautifully smooth out-of-focus areas, which is a big deal for portrait shooters. The f/1.4 aperture is also in the 88th percentile, meaning it lets in a ton of light for shooting in dim conditions. The autofocus performance, however, is more middle-of-the-road, sitting in the 46th percentile. It's not the fastest or most confident AF system out there, especially for moving subjects.

At $549, the Sirui Aurora 35mm f/1.4 sits in an interesting spot. It's significantly cheaper than first-party options from Panasonic or Leica, but you're paying for that savings with some compromises, mainly in autofocus and build sealing. If your priority is image quality and character over blazing speed and weather protection, it presents a solid value proposition for L-Mount shooters who want a fast 35mm.

The most direct competitor is probably the Sigma 35mm f/1.4 DG DN Art, which is more expensive but offers legendary sharpness and better build quality. The Viltrox 35mm f/1.8 (or similar) is another third-party alternative that might be cheaper but could have different optical characteristics. If you're considering a zoom instead, the Tamron 17-70mm f/2.8 gives you way more flexibility but sacrifices that fast f/1.4 aperture and the pristine image quality of a prime. For L-Mount users specifically, the choice often comes down to this Sirui for budget and bokeh, or saving up for the Sigma for all-around excellence.

Skip this lens if you're a hybrid shooter who needs fast, reliable autofocus for video, or if you frequently shoot in adverse weather conditions since it's not sealed. Travel photographers who need a versatile all-in-one zoom should also look elsewhere, as our data shows this lens scores poorly for travel. In those cases, consider a weather-sealed standard zoom or a more established prime from Sigma.

So, should you buy the Sirui Aurora 35mm f/1.4? It's a bit of a niche pick. If you're a stills photographer who loves the 35mm focal length, values beautiful bokeh above all else, and is on a tight budget, this lens delivers stunning image quality for the money. However, if you need reliable, fast autofocus for events or kids, shoot a lot of video without a gimbal, or want a lens you can use in any weather, you should look at more established options from Sigma or Panasonic. It's a great lens for the right person, but it's not trying to be everything to everyone.