Solve for ISO, stop or shutter instead of ND

Open RIG and pick what to work out under SOLVE FOR: ND, ISO, stop or shutter. The other three stay as you set them, and Meter gives the answer for the live light with what is left over.

Step by step

1. Tap the sliders button at the end of the strip under the reading to open RIG.
2. Under SOLVE FOR, tap the one you want worked out.
3. Point at the scene. Read the answer and the Residual.
4. Close RIG. The strip now leads with that answer.

If that didn't work

If the scene is darker than your settings expose for, Meter says that no filter adds light: open up, slow down or raise ISO. It never offers an answer your settings cannot reach.

Go further

• ND calculatorFree tool

Last updated November 2, 2026