In article .com,
Savageduck wrote:

On Jun 7, 2017, Tony Cooper wrote
(in ):
If Live Photos is a mode that can be turned on or off, it would seem
that this adds battery drain when it is on.

Yes or no?

no.

there is no reason why it would.

I'm not "claiming" it is draining the battery, but am asking why the
battery is not increasing in use because the camera is recording that
extra 1.5 seconds at all times when that mode is on.

because it's not recording anything unless you actually take a photo.

the live preview, which occurs any time the camera app is open, is
buffered in memory for autofocus, autoexposure, face detection, special
effects and much more, whether or not live photos is on or off.

if live photos is off, just the photo is saved to flash.

if live photos is on, then the photo plus the last 1.5 seconds of the
memory buffer is saved, plus the following 1.5 seconds unless the
camera moved enough to where the video is no longer relevant. {*]

even if you don't take any photos at all, the phone is still using
power to run the camera app, get data from the sensor, display it on
the screen, etc.

the amount of power to write a file to flash, even if the file is
slightly bigger when it contains video, is negligible compared to
everything else that's going on.

If I read that correctly, the answer to my question is "Yes", not
"No", but the contention is that the battery drain is negligible and -
assumedly - will not affect the phone's performance.

Correct.

tony's interpretation is not correct.