Pontus Cinelight Pro

Professional light metering for cinematographers. Real-time EV, white balance, histogram, ND calculator — and a database of 600+ cinema cameras.

Pontus Lightmeter Pro is the on-set tool built for directors of photography, cinematographers, and serious filmmakers. It turns your iPhone into a professional-grade incident and reflective light meter. Paired with a complete cinema camera database so every reading maps directly to your actual shooting setup.

REAL-TIME EXPOSURE METERING

Live EV readings update continuously from your iPhone's calibrated sensors. Switch between Ultra Wide, Wide, and Telephoto lenses to meter different parts of the scene. Tap anywhere on the frame to drop a precision spot meter, complete with an EV readout at that exact point.

FULL-SPECTRUM WHITE BALANCE

Lightmeter Pro reads both the applied white balance and the raw scene colour temperature simultaneously. Interactive colour temperature and tint bars let you lock WB to a specific value, and a live delta readout tells you exactly how far your locked value drifts from the scene — critical for matching cameras on a multi-cam shoot.

LUMINANCE HISTOGRAM

A real-time 256-bucket luminance histogram shows you the full tonal spread of the scene, with highlight-clip and shadow-clip warnings so nothing comes as a surprise in post.

ND FILTER CALCULATOR

Enter your target T-stop, ISO, shutter angle, and frame rate, and Lightmeter Pro calculates exactly which ND filter you need — density label, factor, and stops. Works in conjunction with the live iPhone readings so the recommendation updates automatically as the light changes.

600+ CAMERA DATABASE Select your actual camera to anchor every reading to the right sensor. The database spans the full range of professional production:

ARRI — ALEXA 35, ALEXA Mini LF, ALEXA 65, ALEXA 265, and more RED — V-RAPTOR, MONSTRO, KOMODO-X, GEMINI, HELIUM, and more Sony — VENICE 2, BURANO, FX9, FX6, FX3, FS7, F55, and more Blackmagic — URSA Cine 12K LF, PYXIS, Pocket 6K series, and more Canon — C700, C500 II, C400, C300 III, C80, EOS R5 Mark II, and more Panasonic — VariCam 35, LUMIX S1H, GH7, GH5S, and more DJI — Ronin 4D 8K, Zenmuse X7 Phantom — Flex4K, v2640 ONYX, VEO4K high-speed cameras Fujifilm — GFX 100 II, X-H2S, X-T4, and more Hasselblad — X2D 100C, H6D-100c, CFV II 50C, and more Leica — SL3-S, SL2, Q3, M11, and more Phase One — IQ4 150, IQ4 100 Trichromatic, and more Sony Alpha — A1, A9 III, A7S III, A7R V, A7 IV, and more Plus: Kinefinity, Panavision, Freefly, Sigma, Ricoh, Nikon, and film formats from 8mm through 65mm

PROJECTS & READINGS

Organise your work into named projects. Every reading you capture, with its annotated frame, histogram snapshot, EV, white balance, and ND recommendation. Is saved to the project for review, sharing, or export.

BUILT FOR THE SET

Dark-mode-only interface designed to be readable in any lighting condition. All readings and controls are accessible with one hand, and the layout stays out of the way of the live camera preview.