Stops — Film Light Meter

A precision light meter for film — reflected and spot metering, exposure lock, reciprocity and ND, plus a roll logbook that remembers every frame.

Stops is a light meter built for film photographers — fast, accurate, and honest about what it measures.

Point your iPhone at the scene and read the exposure the way a dedicated meter would: a clean instrument dial, the full shutter / aperture / ISO triad, and an EV readout you can trust. The reflected, averaged meter is free, forever — no trial timer, no paywall on the one thing a light meter is supposed to do.

Go further with Stops Pro (one-time purchase, no subscription):

• Spot metering — tap any detail to meter a 5% area
• Exposure lock — hold a reading while you recompose
• Roll logbook — note every frame, then export the roll as a PDF
• Reciprocity — long-exposure correction with a per-film curve
• ND calculator — dial in any filter and read the corrected time
• Sunny 16 — a quick daylight sanity check, free forever
• Film profiles — push/pull and reciprocity, saved under your own names

Built for how film actually works:

• Aperture or shutter priority, your choice
• Third-stop precision, snapped to real f-stops and shutter speeds
• Calibration offset to match your meter or your camera
• Made for 35mm and medium format alike

Private by design: Stops reads light through the camera live. Nothing is photographed, stored, or sent — ever.

No account. No ads. No subscription. Just a meter that respects your film and your time.