When Fesi is filming your reaction, the camera needs to face you rather than the event you are watching. The front camera makes that arrangement easy to check on screen. A rear-camera setup can also work, but it requires a deliberate way to verify the view before relying on it.
This guide covers choosing the camera and testing the framing before a Reaction Mode session. It does not assume that Fesi records both cameras at once.
Start with the front camera when preview access matters
With the screen facing you, you can check whether your face, shoulders and hands are visible from your normal seat. That is useful when positioning a mounted phone or checking the readiness messages before a session.
Do the check while sitting naturally. Leaning toward the phone to inspect the screen can create a misleading preview if you then move much farther away to watch. Leave enough space for the movements you expect instead of filling every edge with a close-up.
Use a rear-camera setup only after verifying the view
If you choose the rear camera, point that camera toward your seat. Because the phone’s screen now faces away from you, inspect the setup before capture and make a short test recording. Ask someone to help check the preview if needed.
Do not assume the rear camera automatically gives the best usable result. The actual lens, available recording quality, room light and distance all matter. A well-framed front-camera recording can be more useful than a poorly aimed rear-camera shot.
Choose the lens before you start
Use Fesi’s Flip camera control in the camera setup to choose the intended direction. Check the new preview each time: switching cameras can change the visible area and the position of objects in the shot.
Make this a setup decision rather than assuming you can change lenses seamlessly during an active capture. End or finish the current work before rebuilding the setup, and read the app’s state before starting again.
Test the movement, not just the starting pose
Lean back, raise your hands and stand briefly if those movements are part of your normal reactions. Check whether the important parts remain visible. A framing test does not mean you need to perform a staged reaction; it checks the space the camera can actually see.
Keep the phone stable and check what is visible behind you. The capture-readiness guide explains the app’s framing and lighting messages. Those messages help with setup but do not guarantee detection of every expression.
Play one complete test clip
After choosing the camera, finish a short test and open it in the Library. Confirm that the saved image is the view you intended and that speech is audible if you want microphone audio. Playback is a better confirmation than relying only on the preview.
Keep Fesi active during the actual session and use a separate viewing arrangement when needed. If you switch apps, review the interruption guidance before assuming capture continued. If your next decision is the source resolution, see recording versus export quality.