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Article ID : 00298696 / Last Modified : 20/01/2026Print

An image or video does not appear to be 3D.

Image (video) does not follow or takes a second to follow my face. / Face detection is not working correctly.

    Table of contents:

    Note: In addition to this Q&A, please also refer to the following websites and related articles:

    What to do if an image or video does not appear to be 3D

    The following are possible causes. Check the settings of the device and computer based on the situation.

    1. Faces are not detected.
      This device detects the user's face with an Eye-sensing sensor on the camera, recognizes the user's line of sight, and then displays an optimized image. Therefore, if face detection is not working as it should, the image may be distorted. The face detection feature may not work correctly because the subject is wearing a mask or hat.
      How to check the face detection status
      1. Start the SR Display Settings tool in the Spatial Reality Display Settings app on the computer. Refer to Spatial Reality Display Developer Site (SR Display Settings) to start the setting tool.
      2. In the camera Captured Image window, check that your face is marked with a red frame.
        Notes:
        • The 3D display may be difficult to see when using a face shield.
        • When using this device, remove any masks or hats.
        • If face detection is not done properly, images may not appear as expected in 3D.
    2. 2nd display settings are not correct.
      The display settings on the computer (Windows 10) may not be suitable for this device.
      Check the following in Start → Settings → Devices → Bluetooth & other devices → Related settings → Display settings.
      • Make sure that the computer screen is located on the right and set as the main screen (A).
      • Set the Spatial Reality Display (B) on the left side.
        Display Setting screen: Display screens are listed from the left in the order of B then A.
        1. (Right) Computer main display
        2. (Left) Spatial Reality Display
      • Set the scaling ratio of the Spatial Reality Display to 100% and the Resolution in Scale and layout as follows:
        • ELF-SR1: Confirm input signal of the Spatial Reality Display is 4K (3840x2160).
        • ELF-SR2: Confirm input signal of the Spatial Reality Display is 4K (3840x2160) or 2K(1920x1080).
    3. Improper viewing posture or position
      In principle, this device can display 3D effects only in the horizontal direction. Use this device in a proper viewing environment.
      The viewing posture or position, starting from the left, are in the order of A then B.
      1. Overhead view: The viewing angle (horizontal) is ±25°
      2. Side view: The viewing angle (vertical) is –40°/+20°
      For details on the recommended viewing environment for this device, refer to On the Viewing Environment in the Operating Instructions.
    4. If you replace this device and connect it to the same computer, in rare cases the device settings of a previous device may remain in the operating system. In such cases, delete the UserSettings.ini in the following path on the computer, and then run the executable file (generated by the SDK) of the 3D content again: C:/User/[user name]/AppData\Local/Sony/Config/UserSettings.ini
      Notes:
      1. To show extensions and hidden files such as *.ini files, use the Windows 10 folder options. Folder options can be launched from Settings → Update & Security → For Developers → File Explorer section. If you are unsure, please refer to the instruction manual of your computer.
      2. Deleting hidden files carelessly may cause problems in the operation of Windows, so please be careful. (Reverting the display settings of the folder options after deleting UserSettings.ini is recommended.)
    5. ELF-SR2 only: Display mode might not be in 3D mode. Press the Fn button on the Spatial Reality Display to set the display mode as 3D.

    6. Updating the software to the latest version may fix the problem. The latest versions of the device software or the Software Development Kit (SDK) can be downloaded from the Spatial Reality Display SDK(SR Display SDK) Download webpage.

    Sometimes an image or video does not appear to be 3D and does not follow my face (face detection is not working correctly).

    Face detection may not be working properly. Check the following.

    1. Make sure the surroundings are not too dark.
      To view in 3D with this device, the viewing environment must be bright to some extent. If the surroundings are dark, face detection may work by shining an auxiliary light such as a fluorescent lamp on your face to ensure brightness.
    2. Face detection will not work properly under the following conditions.
      • Backlight
      • Bangs covering the face
      • Wearing sunglasses, etc.
      • Wearing a hat
      • Wearing a mask
      • Wearing a face shield
      • White or black background
        Note: Detection may improve by opening the aforementioned setting tool (SR Display Settings) on your computer, turning off the Auto Exposure setting (remove the checkmark), and then manually adjusting the Camera Gain.

    Note: If face detection is not performed properly, images may not appear as expected in 3D. When using this device, remove any hats, masks, or face shields.

    Sometimes an image or video does not appear to be 3D or takes a second to follow my face (face detection is working correctly). (ELF-SR1 only)

    The USB port on the computer that is connected to the USB port of the device (USB Type-C) may be connected by or recognized as USB 2.0 instead of USB 3.0*.
    * If connected by USB 2.0, the transfer rate will drop and image tracking will be slow.

    Check if STC-MBV133U3VHES is connected by USB 3.0 with the following settings on the computer (Windows 10).
    Start → Settings → Devices → Bluetooth and other devices
    If the device is connected to a USB 3.0 port with the included USB cable, but the computer does not recognize it as USB 3.0, try the following.

    1. Turn off the Spatial Reality Display.
    2. Restart your computer.
    3. Turn on the Spatial Reality Display.