SIRUI 20mm T1.8 1.33X Anamorphic Lens User Manual

Invoering

This manual provides essential information for the proper setup, operation, and maintenance of your SIRUI 20mm T1.8 1.33X Anamorphic Lens. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity.

The SIRUI 20mm T1.8 1.33X Anamorphic Lens, designed for Micro Four Thirds (M4/3) mount cameras.

Instellen

1. De lens monteren

1. Lijn de rode stip op de lenscilinder uit met het overeenkomstige merkteken op de lensvatting van uw camera.
2. Plaats de lens voorzichtig in de lensvatting van de camera.
3. Draai de lens met de klok mee totdat u een klik hoort, wat aangeeft dat deze stevig vastzit.

2. Focus Mode and AFL Button

The lens features both autofocus (AF) and manual focus (MF) capabilities, controlled by a switch on the lens barrel. An Autofocus Lock (AFL) button is also provided for specific camera mounts (E/Z/L Mount).

Detail of the lens barrel showing the AF/MF switch and the AFL button for focus control.

• AF/MF-schakelaar: Slide the switch to select between autofocus and manual focus modes.
• AFL-knop: Press this button to lock the autofocus at the current distance. This button may also be customizable depending on your camera model.

3. Aperture Ring Click Switch

The aperture ring features a click ON/OFF switch, allowing you to choose between a clicked aperture for photography or a de-clicked (stepless) aperture for smooth iris adjustments during video recording.

The aperture ring with its click ON/OFF switch for versatile use in photography and videography.

4. Camera Compatibility (M4/3 Mount)

This lens is designed for M4/3 mount cameras. Refer to the table below for compatible camera models. For full-frame cameras, switch to APS-C/S35 mode or use post-editing to address potential vignetting.

Compatibility chart for the SIRUI 20mm T1.8 1.33X Anamorphic Lens with M4/3 mount cameras.

Bediening

1.33X Anamorphic Aspect Ratio

The 1.33x squeeze factor of this anamorphic lens produces a 2.35:1 widescreen ratio when shooting in 16:9 mode, delivering a cinematic visual experience without the need for cropping.

Visual comparison of standard 16:9 footage and 2.35:1 widescreen footage achieved with the 1.33X anamorphic lens.

Autofocussysteem

Equipped with a precision STM stepping motor, the lens provides smooth, accurate, and quiet autofocus. It supports eye-tracking capabilities and offers an AF/MF switch for complete creative control.

The lens's autofocus system in action, highlighting rapid and precise subject tracking.

T1.8 Fast Aperture

The wide T1.8 aperture allows for increased light intake, which is beneficial for reducing ISO in low-light conditions, achieving sharper subject focus, and producing soft, distinctive bokeh. This enhances low-light performance and offers significant depth of field control.

Demonstration of the T1.8 fast aperture's capability in low-light environments.

Example of the unique oval bokeh characteristic of anamorphic lenses at wide apertures.

20mm Wide-Angle Perspective

The 20mm focal length provides a wide-angle perspective, equivalent to a 22mm full-frame lens horizontally. This makes it suitable for capturing expansive landscapes, starry skies, and fitting subjects within tight indoor spaces.

A scene captured with the 20mm lens, illustrating its wide field of view.

Flare Options

The SIRUI 20mm lens offers two flare options: Blue Flare and Neutral Flare. These options allow for customization of the visual style of your footage.

Examples of blue and neutral flares, demonstrating the distinct visual effects each option provides.

Minimale focusafstand

The lens has a minimum focus distance of 0.4m (1.31ft), enabling close-up shots with a shallow depth of field.

A close-up shot demonstrating the lens's minimum focus distance and shallow depth of field.

Officiële productvideo's

Onderhoud

1. De lens schoonmaken

• Use a soft, lint-free cloth or a lens brush to remove dust and loose particles from the lens surface.
• For smudges or fingerprints, apply a small amount of lens cleaning solution to a microfiber cloth and gently wipe the lens in a circular motion. Avoid applying solution directly to the lens.
• Do not use abrasive materials or harsh chemicals, as these can damage the lens coatings.

2. Opslag

• When not in use, store the lens with both front and rear caps attached to protect the glass elements.
• Bewaar de lens op een droge, koele plaats, uit de buurt van direct zonlicht en extreme temperaturen.
• Consider using a dehumidifying cabinet or silica gel packets in humid environments to prevent mold growth.

3. Behandeling

• Zorg ervoor dat de lens niet valt en dat er geen harde stoten of schokken op de lens komen.
• Do not force any moving parts. If you encounter resistance, recheck the alignment or consult the troubleshooting section.

The compact and lightweight design of the lens facilitates easy handling and integration into various camera setups.

Probleemoplossing

1. Lens Not Mounting Correctly

• Ensure the lens and camera mount are clean and free of obstructions.
• Verify that the red alignment marks on both the lens and camera body are correctly matched before rotating to lock.
• Do not force the lens. If it does not mount easily, re-align and try again.

2. Problemen met autofocus

• Check if the AF/MF switch on the lens is set to AF.
• Zorg ervoor dat de scherpstelmodus van uw camera is ingesteld op autofocus.
• Verify that the lens firmware is up to date. Firmware updates can be performed via the Type-C port on the lens.
• In very low light or with low-contrast subjects, autofocus may struggle. Switch to manual focus if necessary.

3. Image Quality Concerns (e.g., Vignetting)

• If using a full-frame camera, ensure it is set to APS-C/S35 crop mode to avoid vignetting.
• Vignetting can often be corrected in post-production software.
• Ensure the lens elements are clean, as smudges or dust can affect image clarity.

Specificaties

Below are the technical specifications for the SIRUI 20mm T1.8 1.33X Anamorphic Lens:

Comprehensive technical specifications for the lens.

Garantie en ondersteuning

SIRUI products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official SIRUI webwebsite. Bewaar uw aankoopbewijs als aankoopbewijs voor garantieclaims.