Today I started getting suspicious that Optical Image Stabilization is not working on my iPhone 6 Plus. These are the factors that led me to my suspicion:
- While recording a video, if I shake the phone lightly, the shakiness is visible in the preview. However, when I play the after recording, most of the shakiness is gone.
This makes it look like stabilization is only being applied only once the video is done recording: Optical Image Stabilization (at least the way Apple describes it) is supposed to move the physical sensor to compensate for movement, so I believe that the preview shown while recording should also be stabilized.
- Based on the previous assumption that the physical sensor should move, I think that said movement should be apparent by observing the rear-facing camera while the camera app is open and the phone is being shaken lightly. Unless the actual moving parts are not directly visible, I don't think they're moving in my phone. Besides this, the inner part of the camera (the lens you can see right behind the outer glass and the black plastic around it) looks like it's slightly offset downwards, because I can see a small gap right above it, between the plastic and the frame of the camera. The same gap is not visible below the plastic, so it looks like it isn't centered. I have never seen the camera move from that position.
Is there a way to be sure that Optical Image Stabilization is actually working? Do the things I described only happen on my device?