Sirui has introduced three new focal lengths in its IronStar Full-Frame 1.5x Anamorphic Lens series. The new lenses are the 75mm T1.9, 100mm T2.8, and 135mm T2.8. These three new focal lengths join the existing 35mm T1.9, 45mm T1.9, and 60mm T1.9.
We are now seeing the market being flooded with affordable priced anamorphic prime lenses.
75mm T1.9 Key features
- Full Frame | T1.9 to T16
- 1.5x Anamorphic Lens with Neutral Flares
- 0.8 MOD Gears/270° Focus Rotation
- 95mm Front Outside Diameter
- Interchangeable PL/EF Lens Mount
- Background Separation with Oval Bokeh
- 31.5″ Minimum Focus Distance
- 19 Elements in 16 Groups
- 92mm Filter Thread
100mm T2.8 Key features
- Full Frame | T2.8 to T16
- 1.5x Anamorphic Lens with Neutral Flares
- 0.8 MOD Gears/270° Focus Rotation
- 95mm Front Outside Diameter
- Interchangeable PL/EF Lens Mount
- Background Separation with Oval Bokeh
- 11.8″ Minimum Focus Distance
- 19 Elements in 15 Groups
- 92mm Filter Thread
135mm T2.8 Key features
- Full Frame | T2.8 to T16
- 1.5x Anamorphic Lens with Neutral Flares
- 0.8 MOD Gears/270° Focus Rotation
- 95mm Front Outside Diameter
- Interchangeable PL/EF Lens Mount
- Background Separation with Oval Bokeh
- 31.5″ Minimum Focus Distance
- 13 Elements in 10 Groups
- 92mm Filter Thread
All of the lenses in the series cover a 46mm image circle, and they share a common 95mm front diameter and accept 92mm threaded filters.
They are available in user-swappable ARRI PL/Canon EF mounts, and they have 0.8 pitch gears on the focus and iris rings and a 270-degree focus throw.
The lenses also have a back focus adjustment ring, so you don’t need to disassemble the mount or add shims.
The 10mm T2.8 can behave as a macro lens, and it has a 30cm close focus capability.
Here are the weights of the lenses (PL mount):
- 35mm T1.9: 2.3 lb / 1 kg
- 45mm T1.9: 2.25 lb / 1.02 kg
- 60mm T1.9: 2.3 lb / 1.04 kg
- 75mm T1.9: 2.6 lb / 1.18 kg
- 100mm T2.8: 2.45 lb / 1.11 kg
- 135mm T2.8: 2.51 lb / 1.14 kg
Sirui claims that the optical design corrects spherical aberration and edge color aberration, decreases weight, and improves image purity, and the multiple cylindrical elements help prevent distortion, dispersion, and loss of clarity. The lenses are also said to have well-controlled focus breathing.
Pricing & Availability
The 75mm T1.9, 100mm T2.8, and 135mm T2.8 are now available for $999 USD each.
You can also buy them in a set for $2,999 USD.
According to Sirui, they offer free replacement within three years for non-human damage (with valid proof of purchase) and a lifetime paid repair service that is available for human-caused damage (e.g., drops, water, modifications).
