SIRUI 50mm F1.8 1.33X S35 Anamorphic Cine Lens (L-Mount) User Manual

Introduction

This manual provides detailed instructions for the proper use and care of your SIRUI 50mm F1.8 1.33X S35 Anamorphic Cine Lens. This lens is designed to deliver authentic 2.4:1 widescreen cinematic footage with distinctive horizontal flares and oval bokeh, suitable for Super-35 cameras with an L-Mount.

The lens features a 1.33x squeeze factor, expanding the horizontal field of view by 33% compared to standard 50mm lenses, effectively providing a field of view similar to a 37.5mm lens. Its fast F1.8 aperture allows for versatile shooting in various lighting conditions and offers a natural compression and depth of field equivalent to a 75mm full-frame lens.

Package Contents

The SIRUI 50mm F1.8 1.33X S35 Anamorphic Cine Lens package includes:

• Lente anamórfica de 50 mm

Setup

Attaching the Lens

1. Ensure your camera is powered off.
2. Remove the rear lens cap from the SIRUI 50mm F1.8 lens and the body cap from your camera.
3. Align the mounting index on the lens with the corresponding index on your camera body (L-Mount).
4. Gently insert the lens into the camera mount and rotate it clockwise until it clicks into place. Do not force the lens.
5. Remove the front lens cap.

Note: This lens is designed for L-Mount S35 cameras such as Panasonic S5, S1, and Sigma fp.

Attaching Filters

The SIRUI 50mm F1.8 lens is equipped with a 67mm filter thread. To attach a filter:

1. Carefully screw the 67mm filter onto the front thread of the lens.
2. Ensure the filter is securely attached but do not overtighten.

Image: Front view of the SIRUI 50mm F1.8 1.33X S35 Anamorphic Cine Lens, showing the 0.85m/2.8ft minimum focus distance and 67mm filter thread.

Operating the Lens

Manual Focus

This is a manual focus lens. To achieve sharp focus:

• Rotate the focus ring on the lens until your subject appears sharp in the viewfinder or on the camera's LCD screen.
• Utilize your camera's focus peaking or magnification assist features for precise focusing.
• The focus ring has a wide rotation angle of 143.6° for fine adjustments. The minimum focusing distance is 0.85 meters (2.8 feet).

Image: Close-up of the lens showing the manual focus ring with distance markings.

Aperture Adjustment

Adjust the aperture using the aperture ring on the lens. The aperture range is F1.8 to F16.

• Rotate the aperture ring to select your desired F-stop.
• A wider aperture (smaller F-number like F1.8) allows more light and creates a shallower depth of field, enhancing bokeh.
• A narrower aperture (larger F-number like F16) allows less light and creates a deeper depth of field.

Anamorphic Characteristics

The 1.33x anamorphic squeeze creates a distinctive cinematic look:

• Widescreen Aspect Ratio: When desqueezed in post-production, your footage will have a 2.4:1 aspect ratio, providing a wider field of view than standard spherical lenses.
• Horizontal Lens Flares: Expect characteristic blue horizontal flares when shooting into light sources, a hallmark of anamorphic cinematography.
• Oval Bokeh: Out-of-focus highlights will appear oval-shaped, adding to the cinematic aesthetic.

Image: Visual comparison showing a standard 16:9 image versus a 2.4:1 anamorphic image, demonstrating the wider field of view.

Image: Example of horizontal lens flares produced by the SIRUI anamorphic lens when light hits the front element.

Maintenance

• Cleaning: Use a soft, lint-free cloth and a specialized lens cleaning solution to clean the lens elements. Avoid touching the glass directly with your fingers. Use a blower brush to remove dust before wiping.
• Storage: When not in use, keep the lens covered with both front and rear caps and store it in a dry, dust-free environment, preferably in its protective pouch.
• Handling: Avoid dropping or subjecting the lens to strong impacts. Protect it from extreme temperatures and humidity.

Troubleshooting

Common Issues and Solutions

Specifications

Warranty and Support

Warranty Information

SIRUI lenses purchased from authorized dealers are eligible for free replacement within 3 years for optical, electronic, or mechanical defects under normal use conditions. Lifetime repair support is available at applicable service costs.

Note: Customer-caused damage requires paid repair.

Image: SIRUI Warranty and After-Sales Service Policy details, indicating 3 years warranty for defects under normal use.

Customer Support

For further assistance, technical support, or warranty claims, please contact SIRUI customer service through their official website or your local authorized dealer.

You can visit the official SIRUI store on Amazon for more information: SIRUI Official Store

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