My kelvin does not match my other meter

Meter reads the light through your phone's camera, in three color channels, so it can differ from a dedicated color meter, most on LEDs and tubes with a spiky spectrum. If the two differ by about the same amount on warm and on cool light, a per-lens offset can take that difference out.

Step by step

1. Read a gray card filling the frame on GRAY CARD, in steady light, and wait for HIGH.
2. Compare the two meters on a tungsten lamp and again on daylight.
3. If the difference is about the same on both, tap CAL on the meter card and set that lens's temperature and tint offset. Then check it again at the temperatures you shoot.
4. Read again. Logged readings are always stored uncorrected, with the offset beside them, so nothing is lost if you change it.

If that didn't work

An offset is one constant shift per lens. If the difference changes between warm and cool light, or from one kind of LED to another, an offset cannot follow it. Use the reading as a starting point on those lights.

Go further

• Can a phone be a color meter?Guide

Last updated November 2, 2026