Sirui Astra Series T1.8 1.33x 50mm Full-Frame Anamorphic Review

A surprisingly affordable full-frame anamorphic lens for Nikon Z. Optical quality is top-tier, but autofocus and build are just okay. Worth it if you need that cinematic 2.4:1 look without a second mortgage.

The Sirui Astra 50mm T1.8 is a full-frame anamorphic lens for Nikon Z shooters who want that cinematic look without breaking the bank. It's a single-focal-length lens designed to give you oval bokeh, neutral streak flares, and a 2.4:1 aspect ratio without cropping your sensor.

At $849, it's an entry point into anamorphic shooting. You're getting a T1.8 aperture for low light and shallow depth of field, plus the option to use autofocus or manual focus. Just know it's built for a very specific job.

Optically, this lens is a star, scoring in the 96th percentile. That means it's sharp and handles aberrations well, especially for the price. The trade-off is in other areas. Its autofocus lands in the 45th percentile, so it's functional but not lightning-fast or silent. There's no stabilization, and the T1.8 aperture, while decent, is only in the 29th percentile compared to faster cine primes. The 1.6' minimum focus distance is fine for general use, but don't expect true close-up work.

For $849, getting a full-frame anamorphic lens with autofocus is kind of wild. A few years ago, this would've cost thousands. You're paying for the unique optical design and the anamorphic look, not for all-around versatility. If you need that cinematic squeeze and oval bokeh, it's a compelling deal. If you're just looking for a sharp 50mm photo lens, you can do better for the money.

This isn't a direct competitor to standard primes like the Nikon Z 50mm f/1.8 S. That lens will be sharper, faster focusing, and more versatile for photos. The Sirui is for a different job. Compared to other anamorphic options, it undercuts true cine lenses by a mile. The trade-off is in build quality, manual focus feel, and lack of a consistent lens series. Against the Meike 55mm F1.8 Pro, you're choosing between a standard look with better AF and a specialized anamorphic look.

Skip this if you're primarily a stills photographer. The anamorphic workflow is a hassle for photos. Also, if you need a lightweight, versatile travel lens, look elsewhere—this scored a dismal 32/100 for travel. It's a heavy, specialized tool.

Buy this if you're a Nikon Z filmmaker or hybrid shooter who's been curious about the anamorphic look and wants a relatively affordable, single-focal-length entry point. The optical quality is excellent for the price, and having AF is a nice bonus. Just be ready for its weight, its single-purpose nature, and average build.