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Thermion Duo
Thermion Duo

Table of contents

Video Recording and Photography

The riflescope is capable of video recording and photography. Videos and images are saved on the built-in memory card.

Before using the photo and video functions, read the Date and Time subsections of the General Settings section.

For information on how to watch recorded photos and videos, see the Stream Vision 2 user manual: Android, iOS.

Built-in recorder operates in two modes:

  • Photo (photography; the icon  is displayed in the upper left corner of the display).

  • Video (video recording; the icon is displayed in the upper left corner of the display, the total remaining recording time is given taking into account the current resolution in the HH:MM format (hours:minutes).

Toggle (switch) between the riflescope operating modes with a long press of the REC (4) button. Switching between the modes is cyclical (Video–> Photo–> Video...).

Photo mode. Capturing an image

1. Switch to the Photo mode with a long press of the REC (4) button.

2. Press the REC (4) button briefly to capture a photo. The icon  flashes – the photo file is being saved to the built-in SD card.

Video mode. Recording a video

1. Switch to the Video mode with a long press of the REC (4) button.

2. Press the REC (4) button briefly to start video recording.

3. When the video recording starts, the icon  will disappear, instead of it the REC icon as well as the video recording timer displayed in the MM:SS (minutes:seconds) format will appear .

4. Pause/continue recording by briefly pressing the REC (4) button.

5. Press and hold the REC (4) button to stop video recording.

Video files are stored in the built-in memory card:

  • After turning off the video recording;
  • Upon powering the riflescope off if recording was on;
  • When the memory card is overfilled during recording (Memory Full message appears on the display).


  • You can enter and navigate the menu during video recording.
  • Recorded videos and photos are saved to the built-in memory card of the riflescope in the format img_xxx. jpg (for photos); video_xxx. mp4 (for video). 
  • Videos are recorded in clips with a maximum duration of 5 minutes. The number of files is limited by the riflescope's built-in memory and video compression ratio.
  • Regularly check free memory within the built-in memory card and move the footage to other storage media to free up the memory card space.
  • In case of a memory card error, you can use the format function in the General Settings section of the main menu.

  • When the Display Off function is activated, video recording continues to run in the background.