VILTROX AF 23mm F1.4 XF Lens Instruction Manual

1. Introduction

Thank you for purchasing the VILTROX AF 23mm F1.4 XF lens. This prime wide-angle lens is designed for APS-C-format FUJIFILM X-mount mirrorless cameras, providing a 35mm equivalent focal length. It features a bright f/1.4 maximum aperture, an STM stepping motor for autofocus, and advanced optical elements for high clarity and color accuracy. This manual provides essential information for the proper use and maintenance of your lens.

Figure 1: Front view of the VILTROX AF 23mm F1.4 XF lens.

2. Safety Precautions

• Do not expose the lens to direct sunlight for extended periods, as this may damage the internal components.
• Avoid dropping the lens or subjecting it to strong impacts.
• Keep the lens away from water and moisture.
• Do not attempt to disassemble or repair the lens yourself. Contact authorized service personnel for repairs.
• Important Note: Due to its physical design, this lens is not suitable for use on the FUJIFILM X-Pro3 camera and may scratch the camera body if attached.

3. Package Contents

Verify that all items are present in your package:

• VILTROX AF 23mm F1.4 XF Lens
• Front Lens Cap
• Rear Lens Cap
• Lens Hood
• Lens Pouch
• Instruction Manual

Figure 2: Included items in the VILTROX AF 23mm F1.4 XF lens package.

4. Setup

4.1 Attaching the Lens

1. Ensure your camera is powered off.
2. Remove the rear lens cap from the VILTROX lens and the body cap from your camera.
3. Align the white mounting index on the lens with the white mounting index on your Fujifilm X-mount camera body.
4. Insert the lens into the camera mount and rotate it clockwise until it clicks into place.
5. Attach the front lens cap and lens hood as needed.

Figure 3: Rear view of the lens, highlighting the X-mount for attachment to compatible cameras.

Figure 4: The lens correctly mounted on a Fujifilm X-mount camera.

4.2 Firmware Update

The lens features an integrated micro-USB port for firmware updates. To update the firmware:

1. Visit the official VILTROX website to download the latest firmware for your lens model.
2. Connect the lens to your computer using a micro-USB cable.
3. Follow the instructions provided with the firmware download to complete the update process.

Figure 5: The micro-USB port on the lens for firmware updates.

5. Operating the Lens

5.1 Autofocus (AF)

The VILTROX AF 23mm F1.4 XF lens features an STM stepping motor for quick, quiet, and precise autofocus performance.

• Set your camera's focus mode to AF.
• The internal focusing design maintains the overall lens length during use, contributing to improved handling and quicker response.
• Full-time manual focus override is available, allowing you to fine-tune focus even in AF mode.

5.2 Aperture Control

The lens offers a bright f/1.4 maximum aperture, ideal for low-light conditions and achieving shallow depth of field.

• Use the integrated manual aperture ring on the lens for tactile exposure control.
• The aperture ring also features an 'A' position. When set to 'A', aperture selection is automated and controlled by the camera.

Figure 6: Detail of the lens barrel, showing the aperture ring with 'A' setting.

5.3 Optical Design

The lens incorporates advanced optical elements for superior image quality:

• Two Extra-Low Dispersion Elements: These elements reduce color fringing and chromatic aberrations, enhancing clarity and color accuracy.
• Two High Refractive Index Elements: These help control spherical aberrations and reduce distortion, resulting in high sharpness and accurate rendering.
• HD Nano Multi-layer Coating: Applied to individual elements, this coating suppresses flare and ghosting for improved contrast and color fidelity when working in strong lighting conditions.

6. Maintenance

• Cleaning the Lens Surface: Use a soft, lint-free cloth specifically designed for optical surfaces. For stubborn smudges, use a small amount of lens cleaning fluid applied to the cloth, not directly to the lens.
• Cleaning the Lens Body: Wipe the lens body with a clean, dry cloth. Avoid using harsh chemicals or solvents.
• Storage: When not in use, store the lens with both front and rear caps attached in a cool, dry place, away from direct sunlight and extreme temperatures. Use the provided lens pouch for added protection.
• Dust and Moisture: Protect the lens from dust and moisture. If exposed to rain or snow, wipe it dry immediately.

7. Troubleshooting

• Lens not recognized by camera: Ensure the lens is securely attached to the camera body. Power off and restart the camera. Check for available firmware updates for both the lens and camera.
• Autofocus is slow or inaccurate: Ensure sufficient light for the autofocus system. Check that the camera's autofocus settings are appropriate for your shooting conditions. Clean the lens contacts on both the lens and camera body.
• Image quality issues (e.g., blur, chromatic aberration): Ensure the lens is clean and free from smudges or dust. Check camera settings for proper exposure and focus. While the lens is designed to minimize aberrations, extreme lighting conditions can sometimes reveal them.
• Aperture ring not responding: If using the manual aperture ring, ensure it is not set to the 'A' position. If it is, the camera controls the aperture.

8. Specifications

9. Product Video Demonstration

Watch the official product video for a visual overview of the VILTROX AF 23mm F1.4 XF lens features and design.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the warranty card included in your product package or visit the official VILTROX website.

VILTROX Official Website