Why LEDs drift
LEDs are semiconductor diodes, and like all semiconductors they age — their luminous efficacy drops with cumulative on-time, junction temperature, and forward current. Two LEDs from the same wafer batch can differ by 5–10% in brightness out of the box; over a 50 000-hour lifetime they can diverge by 30%+ if uncompensated.
Color shifts too. Red LEDs degrade fastest, so an uncompensated wall develops a green/cyan cast over years. Calibration is the math that hides this from your eye.
Factory calibration
Every Pisces panel passes through our climate-controlled cal room before it ships. We measure each LED's response with a colorimeter array, derive a per-LED correction map, and bake it into the cabinet's firmware. The wall arrives at your venue already inside 0.5 ΔE uniformity at white-point reference.
What "auto-cal" actually does
Pisces panels include a built-in CCD sensor module that periodically scans the LED matrix during a low-light cycle (default: every 168 hours). It measures drift since the last calibration, updates the per-LED correction map, and stores the new map in firmware. No on-site visit, no signal interruption, no extra hardware.
Auto-cal handles brightness drift well. It can't compensate for catastrophic LED failure (a fully dead pixel) or mechanical issues (cabinet alignment, seam shift) — those still need a human.
When you need a field re-cal
- After cabinet replacement. A swapped cabinet has its factory cal but doesn't match its neighbors' aging.
- After a major event with lighting changes. If you swapped color temperatures or HDR modes, you may want to re-anchor the white point.
- Annually for fixed installs. Even with auto-cal, a yearly reference check by a certified tech catches creeping issues.
XR / virtual production specifics
XR volumes need calibration to a pipeline (ACES, Rec.2020, DCI-P3) — not just a "looks good" target. We ship Orion XR pre-calibrated to the pipeline you specify on the order. Field re-cal kits include a portable spectroradiometer and a one-day training so your studio can re-anchor between productions.
Field re-cal kit
Includes a Konica Minolta CA-410 spectroradiometer (or equivalent), magnetic mount, our cal-tool software (talks directly to panel firmware), and a one-day on-site training. List price ~$28 000 for owners with 100+ panels in service. Email [email protected].