After extensive hands-on testing, it becomes clear why the SIRUI Astra draws such polarizing opinions. For those coming from vintage anamorphic glass, the Astra may feel a little too clean and modern. For those whose baseline is spherical lenses, however, the Astra delivers all the anamorphic character one would expect — flares, squeeze, and a distinct cinematic look, just packaged in a more corrected, contemporary way.
The Astra is a full-frame 1.33x autofocus anamorphic lens, and it stands out simply because autofocus anamorphics remain rare in the market. Here's a closer look at how it performs once mounted and put to work.
How Good Is the Astra's Autofocus in Real-World Shooting?
Autofocus is the headline feature of this lens — it's the main reason most filmmakers would consider an autofocus anamorphic in the first place. Tested on a Sony A7S III, the Astra's autofocus proved usable and stable, particularly with the latest firmware update.
That said, performance isn't flawless. In low-light environments using wide-area autofocus, a few hesitations and drops did occur. Some of this comes down to shooting conditions rather than the lens itself, but it's a useful data point for anyone planning to shoot in dim environments.
Does In-Body Stabilization Actually Work with the Astra?
Traditionally, in-body image stabilization (IBIS) isn't recommended with anamorphic lenses — outside of Lumix cameras, it tends to introduce warping and distortion artifacts. The latest Astra firmware appears to change that. In handheld tests — walking with no rig or gimbal — the footage showed no warping and no visible artifacts, a meaningful improvement for handheld shooting.
What About Focus Breathing?
Some focus breathing is present on the Astra, but this is fairly typical for anamorphic lenses as a category rather than a specific weakness of this model. It's best understood as part of the overall anamorphic package.
Do You Need a Bigger Monitor for the Astra?
For Sony shooters, there's an important caveat: cameras like the FX3 and FX30 can de-squeeze anamorphic footage in-camera, but doing so currently disables autofocus on the Astra. The practical workaround is monitoring on an external screen instead.
Because anamorphic footage displays as a squeezed, letterboxed image before de-squeezing, only a narrow strip of the frame is visible on a small screen. A larger external monitor — 6 or 7 inches — makes a real difference for judging focus and framing accurately while shooting.
What Does the Astra's Anamorphic Character Actually Look Like?
As a 1.33x anamorphic, the Astra delivers a more subtle squeeze and a gentler anamorphic look compared to lenses with a stronger ratio. It still retains the signature flares, distortion, and squeeze characteristics that define the anamorphic look — just in a more restrained form.
SIRUI has consistently used pincushion distortion across its anamorphic lineup, and the Astra is no exception. Straight lines near the edge of frame — architectural lines, paneling, trim — show a gentle inward bow, characteristic of pincushion distortion, the opposite of the barrel distortion (outward bowing) found on some competing anamorphics. Neither is objectively "better"; the choice largely comes down to personal taste and desired look. Distortion can always be corrected in post if a shot feels too warped, though retaining some of it helps preserve a recognizable anamorphic signature.
Edge distortion is also minimal on the Astra, which matters more than it might sound — since the full frame is used rather than cropped for a classic anamorphic aspect ratio, edge performance is fully on display, especially during pans. Lenses with a more pronounced "fishbowl" edge effect can look distracting when panning; the Astra holds up well in this regard.
How Do the Flares Look on the Astra?
The Astra is available with classic blue flares or a neutral flare option. Testing was done with the blue flare version, and the results are tasteful — not overly dramatic or streaky, and they complement the lens's overall rendering rather than fighting it. If there's a nitpick, it's that the flares lean more blue than teal, though this is a minor stylistic point rather than a flaw.
How Does the Astra Compare to the Blazar Talon in Rendering and Bokeh?
Anamorphic character isn't just about flares — it's also about how a lens renders depth, separation, and bokeh. The Astra feels clean and modern, with most of its subject separation coming from the fast T1.8 aperture rather than heavy optical distortion.
Compared side-by-side with the Blazar Talon at matched T-stops, the difference in optical philosophy is clear. The Talon's additional optical distortion produces the classic long, oval-shaped bokeh balls associated with vintage-style anamorphics. The Astra, by contrast, renders rounder, more neutral bokeh, with elongation only becoming noticeable toward the edges of frame when panning.
The takeaway: the Astra is more corrected and more modern-looking than something like the Talon, but the sample footage still reads as cinematic rather than clinical or "news report" sharp.
Is the Build Quality What You'd Expect from a Cine Lens?
Yes — the Astra uses an aluminum housing and retains gear rings for iris and focus, along with the overall form factor of a traditional cine lens, despite being autofocus-capable. Hard stops on the focus wheel allow it to be used with a standard follow-focus setup, just like any manual cine lens. It also includes a 67mm front filter thread. Overall, it's a functional, versatile design suited to both autofocus run-and-gun shooting and fully rigged manual setups.
Is Chromatic Aberration an Issue on the Astra?
Not really. Some chromatic aberration wide open is normal and expected on anamorphic lenses, but the Astra keeps it minimal, reinforcing the clean, sharp, punchy look that defines the lens overall.
Who Is the SIRUI Astra Actually For?
The Astra occupies an interesting niche. Many clients and productions either can't work with a strong, obvious anamorphic look, or simply don't want one — explaining anamorphic characteristics to a client can come across more like a science lesson than a creative pitch. This is exactly where the Astra fits in: it functions almost like a "stealth anamorphic," adding cinematic flavor and production value without being overtly stylized.
For anamorphic enthusiasts, it's also a strong middle ground for projects that might otherwise have been shot on spherical glass but call for a slightly more elevated, modern look. The Astra's gentler character isn't a limitation — it's the point.
Final Verdict
The SIRUI Astra earns a strong recommendation, particularly the 50mm, which is the best starting focal length for anyone picking up just one lens to begin with. It won't fully satisfy anamorphic purists chasing heavy vintage distortion and oval bokeh, but for filmmakers wanting usable autofocus, clean modern rendering, and just enough anamorphic character to elevate a project, it's a genuinely compelling option.
For details on the review, please refer to this video: https://www.youtube.com/watch?v=WDDF51_ksQQ&t=40s
SIRUI Astra T1.8 1.33x Full-Frame Autofocus Anamorphic Cine Lens
- Covers Full Frame | T1.8-T22 Aperture
- Selectable Manual and Autofocus
- Neutral Streak Flares
- 2.4:1 Aspect Ratio, No Cropping
- Oval Bokeh, Vertical Background Stretch
