By tilting his head backwards, a man is mimicking the Angle a shorter woman would view him from. When a woman tilts her head forwards she is recreating the way a taller man would see her.

男人头向后伸，正好使比他矮的女人看他，而女人头向前伸正好使比她高的男人看她。

youdao

The angle of view on the interactive map adjusts with the user's every head movement.

ENGADGET: Recon updates its HUD tech, adds new view modes to MOD Live

The 2-oz wearable camera head captures 142 degree FOV, at 1080p 30fps-the widest point-of-view camera angle available on the market.

ENGADGET: Rugged POV.HD video system captures 1080p through anything, for a price