1. The Test Setup
Same street, same ambient light (one working streetlamp per 40 meters), same mounting position behind the mirror, plates at 5, 8, 12 and 18 meters. Four cameras: a 1080P value unit, a 4K Starvis-class sensor (our A5), a 4K with full-color night vision, and an IR-equipped cabin channel. All at default settings, all with the same high-endurance card — because the honest comparison is between cameras as buyers receive them.
- One street, one night, four sensor classes
- Plates at 5/8/12/18 meters
- Stock settings, no post-processing
2. Results by Distance
At 5 meters: all four classes read the plate — this is why cheap cams look great in store demo loops. At 8 meters: the 1080P unit starts smearing; the 4K Starvis and full-color units hold. At 12 meters: only the 4K Starvis and full-color night vision resolve characters reliably. At 18 meters: even the best reads the plate only when the vehicle is stationary or in opposing traffic — headlight glare washes moving plates at that range for every class. The practical standard: 4K Starvis-class reads plates to about 12 meters at night, which covers the intersection and follow scenarios where evidence matters.
- 5m: everything reads
- 12m: only Starvis-class and full-color hold
- 18m moving plates: hard for all classes
3. The Settings That Change the Outcome
Three controllables move night performance more than the sensor does. WDR/HDR on: backlight from headlights is the killer, and wide-dynamic processing recovers the plate under glare. Resolution choice: 4K at night beats 1080P only if the bitrate keeps up — a 4K mode with starved bitrate is worse than honest 1440P. Clean lens: one fingerprint or wiper haze erases a full sensor class of performance; wipe the lens weekly.
- WDR/HDR enabled — handles headlight glare
- Bitrate-starved 4K < honest 1440P
- Clean lens weekly
4. IR Cabin Channels: The Interior Answer
Road plates need visible-light sensors; cabin evidence needs infrared. The G12's IR cabin camera records passengers and handoffs in a pitch-dark interior — which is the evidence rideshare and delivery drivers actually need at night. The two use different physics: no road camera can see through darkness the way IR illuminates a cabin, so spec both rather than expecting one to do the other's job.
- Road plates: visible-light 4K Starvis
- Cabin at night: IR illumination
- G12 carries both
5. What to Buy for Night Evidence
The night-evidence spec: a 4K Starvis-class front sensor with true WDR (the A5 at entry pricing clears it), a rear channel for the hit-and-run capture, and for professional drivers the G12's IR cabin. Beware listings claiming 'night vision' with no sensor class named — interpolated zoom and digital enhancement are marketing, not photons. Our test methodology ships with every wholesale sample kit so your store can run the same comparison on the counter.