Light Meter & Logbook

Vadim Turko

In-app purchases

About this app

Turn your phone into a professional light meter and photo logbook — built for film, digital, medium-format, and pinhole photography.

**ACCURATE EXPOSURES**

• Reflected metering using your phone’s camera
• Incident metering using the built-in light sensor
• EV calibration for consistent, precise results
• Fractional stops (½, ⅓) for fine control

**ADVANCED TOOLS**

• ISO from 3 to 25,600 — full range for any situation
• ND filter support and long-exposure timer with reciprocity correction
• Spot metering with live histogram
• 35 mm equivalent and medium-format focal length display
• Color filter preview for accurate B&W film visualization
• Pinhole camera support with custom f-numbers
• Built-in library of 20+ films; add your own and use push/pull
• Equipment profiles for cameras, lenses, and pinhole — including medium format

**FAST & FLEXIBLE**

• One-tap exposure calculation
• Customizable metering layout
• Dark mode and haptic feedback

**PHOTO LOGBOOK**

• Record exposure settings, location, and notes for every shot
• Keep all shooting data organized and easy to find

**PERSONALIZED INTERFACE**

• Light, Dark, or System theme
• Material You dynamic colors
• Custom primary color

Download Light Meter & Logbook for accurate exposures and a complete shooting record — all in one app.

Ratings and reviews

I tried to write a long, beaming review, but I hit the char limit. So I'll cut to the chase. Excellent app, almost perfect. Ad-free: developer after my own heart. Thanks much: donate? I'd like to humbly suggest somewhat deeper customizability. I'd love to be able to manually specify min/max apertures & shutter speeds, select/deselect shown films in the picker list, and—the "killer feature"—optionally specify limited apertures & shutter speeds, for those cameras with more granualar controls.

Clean and useful free features, but I can't recommend the paid version enough. Just the light meter features are great but having a digital photo log of every film photo is amazing. Camera profiles, film selection, clean design and good performance, this app is THE companion to film photography. I don't know how or if this would work but it would be super cool if it should copy the EXIF data into a scanned film photo.

Love the app, very useful for someone who doesn't own a light meter. I checked against my d7100, seems to be pretty accurate. I do wish there was a way of resizing the parts on the screen, as the camera window is a little small for accurately placing the spot in spot metering.

What’s new

- Improved camera metering on more Android devices, including phones that do not report ISO in photo metadata
- Added first-run calibration guidance and auto-calibration for more accurate metering (manual EV adjustment in Settings → Calibration)
- Logbook: long-press photos to select multiple and delete in batch