1. Introduction
This manual provides essential instructions for the safe and effective use of your STUOGYUM DC402-AF Digital Camera. This compact camera is designed for capturing 48MP photos and 4K Ultra HD videos, featuring autofocus, 16X digital zoom, and anti-shake technology. Please read this manual thoroughly before operating the device.

Figure 1: The STUOGYUM DC402-AF Digital Camera, showcasing its lightweight and portable design.
2. What's in the Box
Verify that all items are present upon unboxing:
- 1x STUOGYUM DC402-AF 4K Digital Camera
- 1x 32GB Micro TF Card
- 2x Rechargeable Lithium-Ion Batteries
- 1x USB Cable (Type-C)
- 1x Power Adapter
- 1x Lanyard
- 1x Wrist Strap
- 1x Camera Bag
- 1x User's Manual (this document)

Figure 2: The STUOGYUM DC402-AF Digital Camera and its included accessories.
3. Camera Overview
The STUOGYUM DC402-AF features a sleek design with intuitive controls. Key components include the lens, flash, power button, shutter button, mode button, and a 2.8-inch IPS display for viewing and navigation.
4. Setup
4.1 Battery and Memory Card Installation & Formatting
Before first use, install the battery and memory card, then format the memory card to ensure optimal performance and compatibility.
- Open the battery/card compartment cover located on the side or bottom of the camera.
- Insert a fully charged lithium-ion battery into the battery slot, ensuring correct orientation.
- Insert the 32GB Micro TF card into the memory card slot until it clicks into place.
- Close the compartment cover securely.
- Power on the camera.
- Press the 'MODE' button three times to enter the 'SETUP' page.
- Use the arrow keys to navigate to the 'Format' option.
- Press the 'OK' button to enter the format setting.
- Select 'Yes' to confirm and complete the memory card formatting.
Video 1: Instructions on how to install the battery and format the memory card in the STUOGYUM DC402-AF Digital Camera.
5. Operating the Camera
5.1 Power On/Off
Press and hold the power button to turn the camera on or off.
5.2 Taking Photos
The camera offers various features to enhance your photography experience.
Autofocus
To achieve clear and vivid photos, press the shutter button halfway down. The focus frame on the screen will change from yellow to green when focus is achieved. Then, press the shutter button fully to capture the image.

Figure 3: Visual representation of the autofocus function, clarifying images.
Video 2: Guide on how to effectively use the autofocus feature of the STUOGYUM DC402-AF Digital Camera.
Digital Zoom & Anti-Shake
Use the W/T buttons to adjust the 16X digital zoom for distant subjects. The anti-shake function helps stabilize images, reducing blur from camera movement.

Figure 4: Examples of 16X digital zoom and the effect of the anti-shake feature.
Fill Light
Activate the built-in fill light for improved photo quality in low-light conditions.

Figure 5: The effect of using the built-in fill light in dark environments.
Other Photo Features
Explore additional features such as:
- Self-timer: Set a delay (2/5/10 seconds) before taking a photo.
- Continuous Shooting: Capture a rapid sequence of photos.
- Face Detection: Automatically detects and focuses on faces.

Figure 6: Various shooting modes including self-timer, continuous shooting, and face detection.
5.3 Recording Videos
To record 4K Ultra HD video, switch to video mode and press the shutter button. The camera's built-in microphone will capture audio. Use the pause function (OK button) during recording or playback.

Figure 7: The camera in use, recording a vlog with its 4K Ultra HD capabilities.
Video 3: A demonstration of the STUOGYUM 4K digital camera's ability to record memorable moments clearly.
5.4 Webcam Function
Connect the camera to a computer via the provided USB cable to use it as a webcam for live streaming or video calls. The camera can be mounted on a tripod for stable use.

Figure 8: Using the STUOGYUM DC402-AF Digital Camera as a webcam for live streaming.
5.5 Playback
Access the playback mode to review your captured photos and videos on the camera's IPS screen.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the camera body. For the lens, use a specialized lens cleaning cloth and solution.
- Battery Care: Store batteries in a cool, dry place. Avoid extreme temperatures. Charge batteries fully before extended storage.
- Storage: When not in use, store the camera in its protective bag in a dry, dust-free environment.
7. Troubleshooting
- Camera not turning on: Ensure the battery is fully charged and correctly inserted.
- Poor image quality: Check lighting conditions, ensure the lens is clean, and verify focus. Adjust settings like fill light or anti-shake if necessary.
- Memory card error: Reformat the memory card (this will erase all data) or try a different compatible card.
- Video recording issues: Ensure sufficient memory card space and battery life.
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | DC402-AF |
| Effective Still Resolution | 48 MP |
| Video Resolution | 2160p (4K UHD) |
| Optical Zoom | 16 x |
| Image Stabilization | Digital |
| Photo Sensor Technology | CMOS |
| Screen Size | 2.8 Inches |
| Display Type | LCD |
| Auto Focus Technology | Contrast Detection |
| Flash Memory Type | Micro SD, SD |
| Memory Storage Capacity | 32 GB (included) |
| Battery Type | Lithium Ion (2 included) |
| Connectivity Technology | USB |
| Special Features | Anti-Shake, Self-timer, Continuous shooting, Face Detection |
9. Warranty and Support
This product comes with a 1-year limited warranty. For any inquiries or technical assistance, please contact STUOGYUM customer service. We offer 24/7 after-sales support to ensure your satisfaction.