Same face. Different score.

Center your face in frame at eye level, straight-on. A camera angled up or down, or a face off to one side, distorts the proportions a jaw-ratio or symmetry read depends on. Keep a consistent distance from the lens between attempts — moving closer or farther changes apparent width-to-height ratios even though nothing about your face changed.

Even, diffused light — daylight facing a window, or a soft front light — reads more consistently than a single harsh overhead source. Overhead-only light casts shadows under the brow, nose, and jaw that a landmark model can read as structure that isn't there. Jaw-related measurements are usually the most light-sensitive of the group, so this is worth getting right before anything else.

A relaxed, neutral expression — mouth closed, eyes open and level — gives the most reproducible read. Smiling, squinting, or turning the head mid-capture introduces asymmetry that has nothing to do with your baseline geometry. If a score swings a lot between attempts, expression drift is the first thing to rule out before assuming the setup is bad.

Mogalytics reads six camera-visible geometry ratios and settles them into a weighted composite over a 30-frame window, trimming the top and bottom 10% of samples so a single blink or turn doesn't skew the result:

• Eye line — canthal tilt, the angle from inner to outer eye corner.
• Jaw ratio — jaw width relative to face height.
• Frame symmetry — bilateral landmark variance, left versus right.
• Midface — eye line to lip distance.
• Cheek ratio — cheek width relative to jaw width.
• Bridge — nose bridge height relative to width.

None of these change because you bought anything. They change because the camera, pose, light, or expression changed — see the full breakdown of why scores swing between scans — which is exactly why a repeatable setup is worth finding before you're live.

The point isn't one lucky frame. Save a baseline reading, change one variable at a time — distance, then light, then angle — and save again. Mogalytics keeps every saved reading local to your browser so you can compare session to session and read the trend, then walk into a live duel with a setup you've already tested instead of finding out in real time.