Record in slo-mo HD at 120fps (iPhone: Settings > Camera > Record Slo-mo).

Face on: Camera facing the golfer, hip height, 8-10 feet away. Frame head to feet, landscape.

Down the line: Camera on the target line behind the golfer, hip height, 8-10 feet back. Frame head to feet, landscape.

Lock auto-exposure and auto-focus before recording (tap and hold). Keep the camera still.

Record at 1080p, 60fps minimum (120fps slo-mo preferred).

Side view: Camera perpendicular to the walking path, 15-23 feet away, hip height. Subject walks left to right. Landscape.

Rear view: Camera 25-33 feet behind the start point, hip height. Subject walks directly away.

Flat surface, no harsh shadows. Shorts or fitted pants, visible ankles, golf shoes only.

3 clean passes per view. Walk naturally. Start recording before entering the walkway.

Lock AE/AF. Keep camera still. Frame head to feet the entire walk.