Camera battery consumption report I am using a Xperia Z3 with android 4.4.4. I can't find how much battery is consumed by the camera app. 

I tried with the included Power Management-> battery usage option but can't find it there.
Android does not show every app's usage data; it only shows significant battery usage in apps, especially those of apps that run in the background -- Camera does not run in the background.

Try leaving your Camera open for a long time, then look in Battery Usage. Note: Depending on your device, many apps my be bundled into the Android/System battery usage entry.