Light Meter & Logbook

Vadim Turko

In-app purchases

About this app

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

ACCURATE EXPOSURES

• Reflected metering with your camera
• Incident metering with the light sensor
• EV calibration for precision
• Fractional stops (1/2, 1/3) for fine-tuning

ADVANCED TOOLS

• ISO range from 3 to 25,600
• ND filter and long-exposure timer
• Spot metering with histogram
• 35mm equivalent focal length display
• Medium-format focal length conversion support
• Apply color filters to the live preview for accurate B&W film visualization
• Pinhole camera support with custom f-numbers
• Built-in library of 20+ films with the option to add your own
• Push/pull processing support
• Reciprocity correction for long exposures

FAST & FLEXIBLE

• One-tap exposure calculation
• Customizable metering screen layout
• Equipment profiles for cameras, lenses, and pinhole setups — now including medium-format systems
• Dark mode and haptic feedback

COMPLETE PHOTO LOGBOOK

• Record exposure settings, location, and notes
• Keep all shooting data organized and accessible

PERSONALIZED INTERFACE

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

Download Light Meter & Logbook to achieve accurate exposures and keep every shot documented — all in one powerful 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.

Good app but would be perfect if the live frame is bigger, if more film profiles such as Fuji or lomography film stock. Too bad it's only live in color and B&W but can't mimic the film effect & color live on screen before shooting too. The most disappointing thing is it can't save the picture from the logbook to the phone. Overall it is Good, just not as good as it should be.

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.

What’s new

- Improved internal logging for better stability and diagnostics
- [Pro] Fixed spot metering issues on some devices