SIRUI IronStar T1.9 1.5x Cine Lens Kit - PL/EF mount, Neutral Flare

Name: SIRUI IronStar T1.9 1.5x Cine Lens Kit - PL/EF mount, Neutral Flare
Brand: Sirui
SKU: ojenwbiq5d
Availability: InStock

The SIRUI IronStar T1.9 1.5x Cine Lens Kit delivers full-frame coverage with a 46mm image circle a...

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Sirui IronStar T1.9 1.5x Cine Lens Kit 35/45/60mm PL/EF Mount Neutral Flare

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Product Information

Full details

The SIRUI IronStar T1.9 1.5x Cine Lens Kit is designed for filmmakers seeking a true anamorphic look with full-frame coverage. Its key benefit is the constant 1.5x squeeze ratio, delivering expansive cinematic visuals with natural depth and character. A potential consideration is its specific anamorphic characteristics, which may require a learning curve for optimal use compared to spherical lenses.

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Brand	Sirui

Extended Product Information

FAQs

What is the constant squeeze ratio of these lenses?

The SIRUI IronStar T1.9 lenses feature a constant 1.5x squeeze ratio.

Do these lenses cover full-frame sensors?

Yes, these lenses are designed to provide full-frame coverage with a 46mm image circle.

What types of mounts are included?

The kit includes interchangeable PL and EF mounts.

How do I achieve the correct aspect ratio from the footage?

You will need to de-squeeze the footage in your video editing software (e.g., Premiere Pro, Final Cut Pro, DaVinci Resolve) to correct the horizontal compression.

Are these lenses suitable for low-light shooting?

Yes, with a fast T1.9 aperture, they perform well in low-light conditions.

What does 'minimal focus breathing' mean?

It means that the field of view changes very little when you adjust the focus, which is important for professional-looking focus pulls.

Can I use these lenses with different camera bodies?

Compatibility depends on whether your camera body accepts PL or EF mount lenses. The interchangeable nature of the mounts provides broad compatibility.

Troubleshooting

Image appears stretched horizontally (anamorphic distortion)

This is expected behavior. The footage needs to be de-squeezed in your editing software or playback application to correct the aspect ratio.

Lens not recognized by camera (EF mount)

Ensure the EF mount is correctly attached to the lens and the camera body. Clean the electronic contacts on both the lens mount and the camera body.

Difficulty achieving critical focus

Utilize the 270° focus throw for precise adjustments. Use your camera's focus peaking or magnification features, or an external monitor for better accuracy.

Flare characteristics are not as expected

The 'Neutral Flare' variant is designed for controlled flares. For more pronounced flares, consider a variant designed for that purpose, or experiment with lighting angles.

Pros and Cons

Pros

Delivers a genuine 1.5x anamorphic image with full-frame coverage.
Fast T1.9 aperture is excellent for low light and creating shallow depth of field.
High-quality optics with ED, aspherical, and HRI elements provide superior image clarity.
Minimal focus breathing ensures smooth and professional focus transitions.
Interchangeable PL/EF mounts offer great versatility for different camera setups.
Consistent aesthetic across the focal lengths in the kit aids in a unified look.

Cons

Anamorphic shooting requires specific techniques and post-production de-squeeze.
The 1.5x squeeze may not be suitable for all aspect ratios or desired looks.
Requires lenses designed to handle anamorphic distortion and characteristics.

Setup, Compatibility & Care

Setup:

Mounting: Select the appropriate mount (PL or EF) and attach it to the lens body. Ensure it is securely fastened to your camera's lens mount.
Focusing: Utilize the 270° focus throw for precise manual focusing. It is recommended to use an external monitor for critical focus confirmation.
De-Squeeze: Remember that anamorphic footage requires de-squeezing in post-production software to achieve the correct aspect ratio and image.

Compatibility:

Camera Mounts: The kit includes interchangeable PL and EF mounts, making it compatible with a wide range of cinema cameras that support these mounts.
Sensor Size: Designed for full-frame sensors, but also adaptable to Super35 and other sensor sizes.

Care:

Cleaning: Use a soft lens brush to remove dust. For smudges, use a lens cleaning cloth with a dedicated lens cleaning solution. Avoid touching the lens elements directly.
Storage: Store lenses in their protective cases in a cool, dry environment. Protect from extreme temperatures and humidity.
Handling: Always handle lenses with care. Avoid dropping or subjecting them to strong impacts.