GrayZone Meter

GrayZone is a professional spot meter inspired by the Zone System.
Measure light exactly where you choose and get precise exposure guidance for highlights, shadows, and midtones.
Ideal for complex lighting and critical exposure situations, analogue or digital.

IMPORTANT: in order to properly work with your device, the first time the app must be calibrated by the user with the tool included.

Zone System Mode
Fast spot metering with Zone System logic.
Tap the area you want to measure and receive accurate exposure guidance for tonal placement.

GrayZone reads light where you decide — not where
your camera guesses.

Built by Max of max&douglas — professional
photographer with 25 years in editorial and
advertising photography.

Direct Exposure Control
Set ISO before metering, like a dedicated light meter.
Instant precise combinations of shutter speed
and aperture.
Exposure lock with AE LOCK.
Half-stop support for finer control.
MANUAL mode with over/underexposure scale.

Essential Interface
Live preview in your sensor's native ratio.
Shows only what you need. Nothing else.

Complete Privacy
No ads. No subscriptions. No photos saved.
No data collected or transmitted.

For manual shooters — on film or digital.
It does not replace your camera. It works alongside it.

Recent changes:
UI refinements and performance improvements. The histogram is now always visible in the live view, including during Zone Mode and when adjusting exposure settings. The Auto/Manual selector has been redesigned as two independent buttons for a cleaner, more intuitive feel. Updated to the latest Android SDK.