I had someone take a photo for me with my phone. I didn't verify the photo but I took the phone back and put it into sleep (pushed the power button to turn the screen off without switching off the power) with the camera app still open.
Some hours later when I woke the phone up, the camera app displayed and in the finder there was for a split second the image that the person had taken for me. The finder then switched to what was currently in front of the lens.
The photo doesn't seem to be saved. It's not in the folder where photos normally end up. However since the image did show up in the finder for that split second well after the fact, the phone must have saved it somewhere at least temporarily.
I've seen this phenomenon before, on multiple phones. In this kind of case, might the image still be somewhere that I could retrieve it, and if so where?