1. Introduction
Thank you for purchasing the VILTROX AF 16mm f/1.8 FE full-frame autofocus lens. This lens is designed for Sony E-Mount mirrorless cameras, offering a wide-angle perspective with a large f/1.8 aperture. It is ideal for various photographic applications, including landscape, astrophotography, architecture, and low-light shooting. This manual provides detailed instructions on how to use and maintain your lens.
Key Features:
- Large F1.8 Aperture: Enables excellent low-light performance and beautiful background blur (bokeh).
- Advanced Optical Design: Features 3 aspherical elements and 4 ED glass elements to minimize aberrations and ensure high resolution from corner to corner.
- Compact and Lightweight: Weighing approximately 552.8g, it is designed for portability without compromising optical quality.
- Circular 9-Blade Aperture: Contributes to smooth and pleasing bokeh.
- Short Minimum Focusing Distance: Allows for close-up shots with dynamic perspectives, as close as 0.3m.
- Integrated LCD Screen: Displays real-time information such as aperture, focusing distance, and focus mode.
- Customizable Function Buttons: Two Fn buttons for quick access to frequently used settings.
2. What's in the Box
Please check the contents of your package to ensure all items are present:
- 1 x VILTROX AF 16mm F/1.8 Lens
- 1 x Lens Hood
- 2 x Lens Caps (Front and Rear)
- 1 x Lens Protection Pouch
- 1 x User Manual

3. Product Overview
Familiarize yourself with the different parts of your VILTROX AF 16mm f/1.8 FE lens.



Lens Components:
- Focus Ring: Used for manual focusing.
- Aperture Ring: Allows for direct aperture control. Can be set to 'A' for camera-controlled aperture.
- LCD Screen: Displays current aperture, focusing distance, and focus mode (AF/MF).
- AF/MF Switch: Toggles between autofocus and manual focus modes.
- Fn1/Fn2 Buttons: Customizable function buttons for quick access to camera settings.
- Lens Mount: Sony E-Mount compatible.
- USB-C Port: For firmware updates.



4. Setup
4.1 Attaching the Lens to the Camera
- Ensure your camera is turned off.
- Remove the rear lens cap from the lens and the body cap from your camera.
- Align the white index mark on the lens barrel with the corresponding white index mark on your camera's lens mount.
- Insert the lens into the camera mount and rotate it clockwise until it clicks into place. Do not force the lens.

4.2 Attaching the Lens Hood
The included lens hood helps to prevent flare and protect the front element of the lens.
- Align the red dot on the lens hood with the red dot on the front of the lens.
- Push the hood onto the lens and rotate it clockwise until it locks into place.
- To store the hood, reverse it and attach it to the lens in the same manner.
5. Operating the Lens
5.1 Autofocus (AF) and Manual Focus (MF)
Use the AF/MF switch on the lens barrel to select your desired focus mode.
- AF (Autofocus): The lens will automatically focus when the camera's autofocus system is engaged.
- MF (Manual Focus): Rotate the focus ring to manually adjust the focus. The LCD screen will display the current focusing distance.
5.2 Using the LCD Screen
The integrated LCD screen provides real-time information about your lens settings.
- Aperture Display: Shows the current aperture value (e.g., F1.8, F5.6).
- Focusing Distance: Displays the distance to the subject in meters (m) or feet (ft).
- Focus Mode: Indicates whether the lens is in AF or MF mode.
5.3 Adjusting Aperture
The lens features an aperture ring for direct control. You can also control the aperture via the camera body.
- Manual Aperture Control: Rotate the aperture ring to select your desired f-stop.
- Camera Control: Set the aperture ring to 'A' (Auto) to allow the camera to control the aperture setting.

5.4 Using Function Buttons (Fn1/Fn2)
The Fn1 and Fn2 buttons are customizable. Refer to your camera's manual for instructions on how to assign functions to these buttons.
5.5 Sample Images




6. Maintenance and Care
6.1 Cleaning the Lens
- Use a soft, lint-free cloth or a lens brush to remove dust from the lens surface.
- For stubborn smudges, apply a small amount of lens cleaning solution to a microfiber cloth and gently wipe the lens in a circular motion.
- Never use abrasive materials or harsh chemicals.
6.2 Storage
- When not in use, attach both front and rear lens caps.
- Store the lens in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for extended periods, consider using a dehumidifying agent to prevent mold growth.
6.3 Handling Precautions
- Avoid dropping or subjecting the lens to strong impacts.
- Do not expose the lens to water or high humidity.
- Do not attempt to disassemble the lens. Repairs should only be performed by authorized service personnel.
7. Troubleshooting
If you encounter issues with your VILTROX AF 16mm f/1.8 FE lens, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lens not recognized by camera | Improperly mounted lens; dirty electronic contacts; outdated firmware. | Ensure lens is securely mounted. Clean lens and camera contacts with a dry cloth. Check VILTROX website for firmware updates. |
| Autofocus is slow or inaccurate | Low light conditions; subject lacks contrast; AF/MF switch set to MF; outdated firmware. | Ensure adequate lighting. Focus on areas with good contrast. Set AF/MF switch to AF. Update lens firmware. |
| Images are blurry or out of focus | Incorrect focus mode; camera shake; dirty lens elements. | Verify focus mode (AF/MF). Use a faster shutter speed or tripod. Clean lens elements. |
| LCD screen not displaying information | Lens not powered on (camera off); connection issue. | Ensure camera is on. Re-mount the lens. |
If the problem persists after trying these solutions, please contact VILTROX customer support or an authorized service center.
8. Specifications
Detailed technical specifications for the VILTROX AF 16mm f/1.8 FE lens.
| Feature | Specification |
|---|---|
| Model | Q-0523-03358-01 |
| Focal Length | 16mm |
| Maximum Aperture | f/1.8 |
| Minimum Aperture | f/22 |
| Lens Mount | Sony E-Mount |
| Format Compatibility | Full-Frame |
| Angle of View | 105.6° |
| Optical Design | 15 Elements in 12 Groups (including 3 Aspherical, 4 ED elements) |
| Diaphragm Blades | 9 (Circular) |
| Minimum Focusing Distance | 0.3 m (0.98 ft) |
| Maximum Magnification | 0.1x |
| Autofocus | Yes |
| Image Stabilization | No (Optical stabilization is camera-dependent) |
| Filter Thread | 77 mm (Front) |
| Dimensions (ø x L) | 85.2 x 102.9 mm (3.35 x 4.05 inches) |
| Weight | 552.8 g (1.22 lbs) |

9. Warranty and Support
9.1 Warranty Information
VILTROX products are guaranteed against manufacturing or performance defects for 2 years. Products with non-human damage can be exchanged for a new product free of charge within the first 6 months.
9.2 Customer Support
For further assistance, technical support, or warranty claims, please visit the official VILTROX store or contact their customer service.
Official VILTROX Store: VILTROX Store on Amazon
10. Official Product Videos
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