SIRUI Aurora 85mm F1.4 Full Frame Auto Focus Lens for Nikon Z

1. Introduction

This manual provides detailed instructions for the proper use and care of your SIRUI Aurora 85mm F1.4 Full Frame Auto Focus Lens for Nikon Z-mount cameras. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity.

The SIRUI Aurora 85mm F1.4 lens is a telephoto prime lens designed for full-frame Nikon Z-mount cameras, offering a fast f/1.4 aperture, precise autofocus, and exceptional image quality for various photographic applications, particularly portraiture.

2. Product Features

• Unparalleled Image Quality: The lens delivers outstanding sharpness across the entire frame, even at f/1.4. It incorporates aspherical, ED (Extra-low Dispersion), and HRI (High Refractive Index) glass elements to effectively suppress chromatic aberration and ensure accurate color reproduction.
• Ultra-Fast F/1.4 Aperture: Equipped with a fifteen-blade diaphragm, this fast aperture lens allows ample light into the camera, making it suitable for low-light conditions. The wide aperture also produces a smooth, dreamy bokeh, enhancing creative shots.
• Fast, Smooth & Precise Autofocus: Featuring a step motor (STM), the lens supports advanced autofocus functions such as Eye AF and object tracking, providing enhanced accuracy and smooth performance for both still photography and capturing fast-moving subjects.
• King of Portrait: With its classic 85mm focal length, this lens is ideal for natural facial shots. It provides a moderate working distance between the photographer and subject, perfect for portraits, close-ups, and achieving creamy bokeh.
• Super Lightweight Design: The optimized lens structure reduces its weight to approximately 570g (1.3lbs), making it about 17% lighter than comparable lenses. This lightweight and compact design facilitates comfortable long-duration handheld shooting or gimbal work.
• Professional Lens Control: The lens includes an AF/MF focus mode switch, an AFL (Auto Focus Lock) button, and an aperture ring with switchable click stops, offering flexible control to suit individual shooting preferences.

3. Setup and Installation

3.1 Unpacking the Lens

Carefully remove the lens and its accessories from the packaging. Verify that all components listed in the 'What's in the Box' section are present.

3.2 Attaching the Lens to Your Camera

1. Ensure your camera is turned off.
2. Remove the rear lens cap from the SIRUI Aurora 85mm F1.4 lens and the body cap from your Nikon Z-mount camera.
3. Align the mounting index (usually a white dot) on the lens with the corresponding index on your camera body.
4. Insert the lens into the camera's lens mount and rotate it clockwise until it clicks into place. Do not force the lens.
5. Attach the front lens cap when not in use to protect the front element.

4. Operating Instructions

4.1 Focus Mode Switch (AF/MF)

The lens features a switch to toggle between Autofocus (AF) and Manual Focus (MF) modes. Locate the AF/MF switch on the side of the lens barrel and slide it to your desired mode.

• AF (Autofocus): The camera will automatically focus on your subject. This mode supports Eye AF and object tracking for precise and rapid focusing.
• MF (Manual Focus): You can manually adjust the focus by rotating the focus ring on the lens barrel.

4.2 Aperture Ring and Click Stop Switch

The lens is equipped with an aperture ring for direct control over the aperture setting. It also has a switch to enable or disable click stops.

• Click ON/OFF Switch: This switch allows you to choose between a clicked aperture ring (for tactile feedback in photography) or a de-clicked, smooth aperture ring (ideal for silent aperture adjustments during video recording).
• Aperture Values: Rotate the aperture ring to select your desired f-stop, from f/1.4 to f/16.

4.3 AFL (Auto Focus Lock) Button

The AFL button, located on the lens barrel, allows you to lock the autofocus at a specific distance. This feature is particularly useful for recomposing shots after achieving focus. On Nikon Z-mount cameras, this button can often be customized via the camera's menu to perform other functions.

4.4 Video Features

The SIRUI Aurora 85mm F1.4 lens is also well-suited for video production, offering smooth autofocus and excellent optical performance. The de-clicked aperture ring is beneficial for seamless exposure adjustments during filming.

5. Maintenance

Proper maintenance ensures the longevity and optimal performance of your lens.

• Cleaning the Lens: Use a soft, lint-free cloth or a lens brush to remove dust from the lens surfaces. For smudges or fingerprints, use a lens cleaning solution specifically designed for optical elements and a microfiber cloth. Avoid touching the glass elements directly with your fingers.
• Storage: Store the lens in a cool, dry place away from direct sunlight and extreme temperatures. Always attach the front and rear lens caps when the lens is not in use. If storing for extended periods, consider using a dehumidifying agent to prevent mold growth.
• Handling: Avoid dropping or subjecting the lens to strong impacts. The lens features a dust and splash-resistant structure, allowing it to be used in light rain conditions, but it is not fully waterproof. Avoid prolonged exposure to heavy rain or submersion in water.

6. Troubleshooting

6.1 Autofocus Issues

• Lens not focusing: Ensure the AF/MF switch on the lens is set to AF. Check your camera's focus mode settings.
• Slow autofocus in low light: This is a normal phenomenon for many lenses. The f/1.4 aperture helps, but extremely dark conditions may still result in slower AF performance.
• Focus hunting: In challenging lighting or with low-contrast subjects, the lens may 'hunt' for focus. Try focusing on a higher contrast area or switch to manual focus.

6.2 Image Quality Concerns

• Soft images: Ensure the lens is clean and properly mounted. Check your camera's shutter speed to avoid motion blur. For optimal sharpness, consider stopping down the aperture slightly from f/1.4, especially if shooting subjects at a distance.
• Chromatic Aberration: While the lens is designed to suppress chromatic aberration, some may still occur in high-contrast situations. This can often be corrected in post-processing software.

6.3 Firmware Update

The latest firmware version for the Aurora 85mm lens is 85mm F1.4 V1.0.8. For instructions on how to update the firmware, please contact SIRUI USA support via email. Keeping your lens firmware updated ensures compatibility and optimal performance.

7. Specifications

8. Warranty and Support

This SIRUI Aurora 85mm F1.4 lens comes with a 3-Year Manufacturer Warranty. For warranty claims, technical support, or any inquiries, please contact SIRUI USA directly. Keep your purchase receipt as proof of purchase.

For the latest information and support, please visit the official SIRUI Store on Amazon.