SIRUI Saturn T2.9 1.6X Full Frame Carbon Fiber Anamorphic Lens Set (35mm, 50mm, 75mm) Instruction Manual

Introduction

This manual provides comprehensive instructions for the SIRUI Saturn T2.9 1.6X Full Frame Carbon Fiber Anamorphic Lens Set, including the 35mm, 50mm, and 75mm lenses. These lightweight cine lenses are designed for RF Mount cameras and offer a unique cinematic aesthetic. Please read this manual thoroughly before using your lens set to ensure proper operation and care.

Product Overview

The SIRUI Saturn series anamorphic lenses are engineered for professional filmmaking, offering a 1.6x squeeze factor and full-frame coverage. Their carbon fiber construction contributes to a lightweight design, making them suitable for various shooting scenarios, including handheld, gimbal, and drone setups.

Image: The SIRUI Saturn 3-Lens Set, featuring the 35mm, 50mm, and 75mm lenses, presented with their carrying case.

Image: Detail of the carbon fiber construction on the front barrel of a SIRUI Saturn lens, highlighting its lightweight yet durable design.

Image: A diagram illustrating the difference between spherical and aspherical lens designs, emphasizing how aspherical elements reduce focus shift and overall lens weight.

Setup

Mounting the Lens

The SIRUI Saturn lenses are available in various mirrorless mount options, including Canon RF, DJI DL, Fujifilm X, Leica L, Nikon Z, and Sony E. Ensure you have the correct lens mount for your camera body.

1. Align the red dot on the lens with the corresponding mark on your camera's lens mount.
2. Gently insert the lens into the camera mount.
3. Rotate the lens clockwise until it clicks into place, indicating it is securely locked.
4. To detach, press the lens release button on your camera and rotate the lens counter-clockwise.

Image: An illustration detailing the six different camera mounts compatible with the SIRUI Saturn series lenses: DL Mount (for DJI), RF Mount (for Canon/RED KOMODO), E Mount (for Sony), Z Mount (for Nikon), X Mount (for FUJIFILM), and L Mount (for Leica/Panasonic/Sigma).

Filter Installation

The SIRUI Saturn lenses feature a 62mm filter thread, allowing for the attachment of various filters (e.g., ND, CPL) to enhance your cinematic shots.

1. Carefully screw the 62mm filter onto the front of the lens until it is finger-tight.
2. Avoid over-tightening to prevent damage to the filter or lens thread.

Image: Two SIRUI Saturn lenses highlighting their 62mm filter thread, indicating compatibility with standard filters.

Operating the Lens

Focus and Aperture Control

The SIRUI Saturn lenses feature manual focus and aperture control. The focus and iris gears are positioned consistently across all lenses in the set, facilitating quick lens changes and use with follow focus systems.

• Focus Ring: Rotate the focus ring to adjust the focus. The focus markings are engraved in both metric (meters) and imperial (feet) scales. The focus ring has a smooth throw of 120 degrees for precise adjustments.
• Aperture Ring: Rotate the aperture ring to adjust the T-stop. The maximum aperture is T2.9, and the minimum is T16.

Image: A detailed view of a SIRUI Saturn lens, clearly displaying both metric and imperial focus scales for versatile use.

Image: The 35mm, 50mm, and 75mm SIRUI Saturn lenses aligned, demonstrating their identical gear positions for seamless integration with follow focus systems.

Anamorphic Characteristics

The 1.6x squeeze factor of these lenses provides a distinct cinematic look with oval bokeh and characteristic lens flares.

• Aspect Ratio: When shooting on a 16:9 sensor, the 1.6x squeeze factor produces a 2.8:1 aspect ratio. For cameras allowing 3:2 capture, the output will be a 2.4:1 aspect ratio.
• Field of View: The 50mm lens provides a horizontal field of view equivalent to a 31mm spherical lens. The 75mm lens behaves like a 47mm spherical lens horizontally.
• Flare Options: The lenses are available in two flare types:
  • Classic Blue Flare: Offers a sci-fi, cool aesthetic.
  • Natural Flare: Provides a soft, creamy ambiance suitable for warmer tones.
• Oval Bokeh: The 1.6x squeeze factor renders a dreamy oval and elongated bokeh, effectively separating the subject from the background.

Image: A cinematic frame demonstrating the wide 2.8:1 aspect ratio achieved with the 1.6x anamorphic squeeze on a 16:9 sensor.

Image: A visual comparison of the two flare options available with SIRUI Saturn lenses: classic blue flares for a cool, sci-fi look, and natural flares for a soft, creamy ambiance.

Image: A collage of cinematic stills showcasing the outstanding optical performance of the lenses, including dreamy oval bokeh, sharp central focus, and controlled edge distortion.

Minimum Focusing Distance

The minimum focusing distance for both the 50mm and 75mm lenses is 0.9 meters (3 feet). For closer focus, diopters may be required.

Image: A close-up shot illustrating the minimum focusing distance of 0.9 meters (3 feet) for the SIRUI Saturn lenses.

Video Demonstrations

Maintenance

Proper maintenance ensures the longevity and optimal performance of your SIRUI Saturn lenses.

• Cleaning: Use a soft, lint-free cloth and a specialized lens cleaning solution to clean the optical elements. Avoid touching the glass surfaces with your fingers.
• Storage: Store the lenses in their protective case in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Always handle the lenses with care, avoiding drops or impacts that could damage the internal components or carbon fiber barrel.
• Dust Protection: Keep lens caps on when not in use to prevent dust accumulation.

Troubleshooting

This section addresses common issues you might encounter with your SIRUI Saturn lenses.

• Difficulty Achieving Close Focus: The minimum focus distance is 0.9m (3ft). For subjects closer than this, consider using diopters.
• Low Light Performance: With a maximum aperture of T2.9, these lenses may be limiting in very low light conditions. Adjust camera ISO or add external lighting as needed.
• Chromatic Aberration: While well-controlled, some chromatic aberration may occur, especially towards the edges of the frame. This can often be corrected in post-production.
• Focus Breathing: Some focus breathing is present, meaning the magnification changes slightly when racking focus from close to infinity. This is a characteristic of many anamorphic lenses and can be managed with careful shot planning.

Specifications

Warranty and Support

SIRUI provides a 1-year manufacturer's warranty covering defects in workmanship related to optical, electronic, or mechanical failures under normal use. Manufacturing defects are eligible for replacement within 1 year of the original purchase date. Repair services are available for customer-induced damage.

For support or warranty claims, please contact SIRUI customer service:

• Manufacturer Contact Information: 862-277-1002
• Online Support: Visit the Sirui Store on Amazon for additional resources and contact options.