MeterGlass

Turn your iPhone into a pro light meter: average, spot and Zone System metering, with calibration and clear EV, aperture/shutter, lux and color-temperature readouts.

MeterGlass turns your iPhone into a reliable, easy-to-use light meter — perfect for film photographers, cinematographers, or anyone who needs quick and accurate exposure readings.

FEATURES

• Real-Time Metering — Point your camera and instantly see exposure values update on screen. • Zone System Support — Visualize exposure zones to fine-tune your metering decisions. • Intuitive Interface — A clean, distraction-free design that puts the readings front and center. • Full Exposure Control — Adjust ISO, aperture, and shutter speed to match your shooting style. • Configurable Aperture Steps — Choose between 1/2-stop and 1/3-stop increments. • Completely Offline — No internet connection required. Ever. • No Ads, No Tracking — Your privacy is fully respected. Zero data collection.

HOW IT WORKS

1. Open MeterGlass and point your device at the scene.
2. Set your preferred ISO value.
3. Read the recommended shutter speed and aperture combinations.
4. Shoot with confidence.

Whether you're loading a roll of Portra or setting up a studio shot, MeterGlass gives you the readings you need — fast, simple, and accurate.