According to the official documentation,

With the camera placed upside-down, the image must be rotated 180° to be displayed correctly. The way to correct for this is to apply both a vertical and a horizontal flip by passing in the -vf and -hf flags:

raspistill -vf -hf -o cam2.jpg

An astute reader will also notice that -rot 180 yields the same result.

So in the use case of a raspberry pi zero w with official camera (noir or daylight), which is more efficient?

Note: Using power-management tag because I'm wondering if this could impact lower-power usage deployments.

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