Sirui IronStar 100mm T2.8 Anamorphic 1.5x 100mm

The Sirui IronStar 100mm T2.8 Anamorphic 1.5x is an affordable entry into full-frame anamorphic shooting with sharp optics, a smooth manual focus throw, and interchangeable PL/EF mounts. Build quality feels cheap and there's no stabilization, so it's best suited for controlled sets and tripod use. At around $999, the image quality is hard to beat, but run-and-gun shooters should look elsewhere.

On our optical bench, the IronStar 100mm landed in the 75th percentile among all cine lenses we've tested—that's well above average, and it shows in the real world. Sharpness is excellent across most of the frame at T2.8, only dropping off slightly toward the very edges, which is normal for an anamorphic design. Chromatic aberration is well controlled, and flare patterning is clean and predictable. If you're shooting narrative work or music videos, that neutral flare coating gives you subtle blue streaks without washing out contrast, which is a refreshing change from some anamorphics that push the look too hard. The focus throw is long and precise, making it easy to nail critical focus at T2.8, though you'll absolutely want an external monitor for accurate eye focus.

Close-up performance is a modest strong point—our macro tests put it in the 66th percentile, which is solid for a lens of this type. That 11.8-inch minimum focus distance isn't going to replace a dedicated macro lens, but it gets you tight enough for detail shots and product videography. Bokeh quality sits right around average for this class, which is fine; the oval anamorphic bokeh is pleasant but not as buttery as you'd get from a higher-end set. The big letdown is aperture speed: T2.8 lands in the 39th percentile, meaning plenty of cine primes open wider. In controlled light, it's no problem, but on a dimly lit set, you'll be pushing ISO higher than you'd like. Lack of stabilization also hurts handheld work, with the lens scoring in the 34th percentile for that metric—no IS means your camera body better have IBIS if you plan to shoot off the sticks.

Direct anamorphic rivals at this focal length are scarce under $2,000. Sirui's own 50mm anamorphic is the closest sibling, and while it's wider, it shares many of the same handling characteristics. Vazen's anamorphic lenses for full frame are pricier and better built but also much heavier. The truly odd part is that our database suggests cross-shopping with general-purpose zooms like the Nikon Z 18-140mm f/3.5-6.3 VR or Canon RF-S 18-150mm F3.5-6.3 IS STM—obviously those won't give you anamorphic character, but they do offer stabilization, weather sealing, and zoom versatility for run-and-gun work. The Sigma 10-18mm F2.8 DC DN is a wide option for crop sensors, and the Panasonic 12-35mm f/2.8 is a workhorse for MFT. If you need a cinematic look with a squeeze factor, those zooms aren't even playing the same sport, but they highlight just how specialized the IronStar is. For narrative filmmaking on a budget, this lens is in a lean category of one, but for documentary or event work, a stabilized zoom is probably the smarter buy.

The Sirui IronStar 100mm sits in a weird pricing window. We've seen it listed anywhere from $999 to $1,380 across vendors, so there's a $381 spread you'll want to shop around for. The best deal we spotted was at $999 from one major retailer, and at that price, it's a legitimate bargain for a full-frame anamorphic lens with included PL and EF mounts. Most competing anamorphic sets start well above $2,000, so Sirui is undercutting the market hard. The trade-off is that you're getting consumer-grade build quality wrapped around genuinely good glass—if you treat it gently and don't need pro ruggedness, it's hard to argue with the image for the money. But if build longevity matters, you might be better off saving up for a Vazen or a used Cooke anamorphic set.

If you've been hunting for an affordable anamorphic lens to get that cinematic widescreen look on a full-frame camera, the Sirui IronStar 100mm T2.8 1.5x is one of the few options under $1,400. It's a manual focus prime designed for filmmakers who want horizontal lens flares, oval bokeh, and a classic 2.4:1 aspect ratio after desqueeze. The included interchangeable PL and EF mounts make it adaptable to a wide range of cinema and DSLR rigs, and the 270-degree focus rotation with 0.8 MOD gears fits right into a follow-focus workflow. We've run this lens through our test bench alongside dozens of cine primes, and while the image quality is a pleasant surprise, there are some real compromises you'll need to weigh.

Physically, it's a substantial piece of glass at 1090 grams with a 95mm front diameter, so you'll want a sturdy rig or tripod. The T2.8 maximum aperture is decent for controlled lighting but isn't going to save you in extremely dark scenes, and there's no autofocus or stabilization of any kind—which is normal for cine lenses, but still worth noting if you're coming from photography glass. The build quality is, honestly, not what we'd expect from a lens in this price bracket; it feels less rugged than many competitors, and there's no weather sealing.

Where the IronStar shines is its optical performance. Those 19 elements in 15 groups do some heavy lifting, and the neutral-coated flares (a blue-flare version is also available) give you that anamorphic character without going overboard. The 16-blade aperture keeps bokeh smooth, though we'd stop short of calling it extraordinary. For videographers and indie filmmakers looking to add a 100mm anamorphic to the kit without remortgaging the house, this lens demands a close look, but it's far from a one-size-fits-all solution.

Skip this lens if you shoot handheld without a stabilized body, need autofocus for gimbal work, or travel light—its weight and lack of IS make on-the-go shooting a chore. Event videographers and documentary runners who rely on quick focal length changes will be better served by a quality zoom like the Canon RF-S 18-150mm IS STM or a fast stabilized prime. If build quality is a top concern and you plan to rent or use the lens in tough environments, the IronStar's plastic-heavy construction won't inspire confidence; invest in a Vazen or used high-end anamorphic instead.

The Sirui IronStar 100mm T2.8 Anamorphic 1.5x is a lens for a specific filmmaker: someone who wants the anamorphic look on a full-frame sensor without spending five figures. The image quality is genuinely impressive, and that 270-degree focus throw is a joy to use when you're pulling manually. But you need to go in with eyes wide open about the build quality, which is one of the worst in its class—our data puts it in the 13th percentile, meaning it feels more like a premium stills lens than a rugged cine tool. If you can live with that, and you don't need stabilization or autofocus, it's a solid creative tool that will make your footage stand out.

Should you buy it? If you shoot narrative shorts, music videos, or stylized branded content and you're dying for that widescreen punch, the $999 entry point makes it a very tempting way into anamorphic. But if you're a solo operator who shoots handheld, works in dusty or damp conditions, or needs to switch focal lengths quickly, this lens will frustrate you. For hybrid shooters who also do photo work, you'll miss autofocus badly. We like the IronStar for what it gets right optically, but the build flaws keep it from being an easy recommendation for everyone.