Measure illumination (light intensity) and get exposure settings for your camera
Pros & Cons
Real-time exposure calculator with precise control over exposure parameters
Dual measurement modes for incident and reflective readings
Excellent low-light performance, including very dim conditions
Broad filter support and multiple measurement units for flexibility
Competitors often emphasize metering-specific terminology (e.g., metering, manual, aperture) that this app does not foreground in its keyword set
Some users may prefer more explicit manual camera controls or aperture-centric workflows that are common in rival apps
Reliance on device sensors/camera for reflective metering may be less suitable for dedicated metering workflows compared to specialized hardware
About Light Meter - Lux, Exposure
Light Meter - Lux, Exposure is a photography app developed by Contechity AB.
Download Statistics
Light Meter - Lux, Exposure has been downloaded 160 thousand times. In the last 30 days, the app was downloaded 6.4 thousand times.
User Ratings
Light Meter - Lux, Exposure is rated 4.77 out of 5 stars. The rating is based on 2.1 thousand ratings.
App Information
Light Meter - Lux, Exposure is FREE to download. The APK download size is 20.59 MB. The latest version available is 3.1.0. The last update was on June 5, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play March 2024.
Description
Precise Light Meter with Built-In Exposure Calculator
Achieve perfect exposure every time with professional-grade accuracy and an intuitive design. Trusted by photographers, filmmakers, plant enthusiasts, and lighting professionals worldwide.
๐ท INTERACTIVE EXPOSURE CALCULATOR Get instant, optimal camera settings with real-time adjustments for aperture (f-stop, f-number), shutter speed (exposure time), ISO, +/- exposure compensation, and filters. Choose between full stops, half stops, and third stops individually for each parameter. Lock any setting to maintain creative control. Perfect for SLR, analog, manual, vintage, and film cameras.
๐ฌ SHUTTER ANGLE FOR VIDEO & FILM Set your frame rate and shutter angle, or use the standard 180° rule, to automatically calculate the optimal shutter speed for natural motion blur.
๐ฏ PROFESSIONAL ACCURACY Pre-calibrated to match three professional light meters, with optional device-specific calibration for even greater precision.
๐ DUAL MEASUREMENT MODES Incident measurement using your device's light sensor and reflective measurement with the rear/front cameras. Resizable measurement area with spot metering for precise control.
๐ SUPERIOR LOW-LIGHT PERFORMANCE Unlike other smartphone light meters, this app excels in very low light conditions, even when measuring with the cameras (reflective mode). Measures values below 1 lux, 0.1 fc, and nearly down to -2 EV.
๐ข COMPREHENSIVE FILTER SUPPORT Full support for ND (neutral density) filters, color filters, IR filters, CPL/PL polarizing filters, and custom filters.
๐ก MULTIPLE MEASUREMENT UNITS Measure light intensity (illumination/brightness) in Lux (lx, lumens/m²), Foot-Candles (fc), and Exposure Value (EV).
๐พ SAVE MEASUREMENTS Store unlimited readings with timestamps, custom notes, and complete camera settings for future reference and comparison.
๐ VERSATILE APPLICATIONS Beyond photography and filmmaking, widely used for horticulture ๐ฑ, plant growing ๐ชด, aquariums ๐ , terrariums ๐ฆ, art galleries ๐ผ๏ธ, museums ๐๏ธ, offices ๐ข, and workspaces ๐ผ.
๐ฏ๏ธ ALL LIGHT SOURCE TYPES Accurately measures LEDs, incandescent bulbs, fluorescent lights, halogen lamps, natural sunlight, laser diodes, OLEDs, and any other artificial or ambient lighting.
๐ฌ๐ง 40 LANGUAGES SUPPORTED Fully localized interface and comprehensive user documentation in 40 languages, including English.
โ๏ธ FULLY CUSTOMIZABLE Tailor the app to your workflow, including high-contrast mode for accessibility.
โ๏ธ RESPONSIVE DEVELOPER SUPPORT Questions or feature requests? Email apps@contechity.com — you'll get a personal response!
Turn your phone into a professional light meter today!
Recent changes: • More fine-grained control over maximum aperture. • ISO range expanded down to ISO 0.8. • Optical density and exposure value information added for all ND filters.
These features were suggested by our users. Have an idea? Share it in a review!
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Comments on Light Meter - Lux, Exposure for Android
โ โ โ โ โ Patrick Mcdougallยท Jul 19, 2025
I've checked this light meter against my iconic L308, all readings are spot on aperture shutter speed and ISO. Well, worth the small cost, I would highly recommend.
โ โ โ โ โ Chad Sanbornยท Mar 4, 2026
Great app. I measure light readings daily and this app is spot on correct. The ability to lock parts of the exposure triangle to see what the other parts read is invaluable.
โ โ โ โ โ Dave Catleughยท May 11, 2026
Light meter not working on my vintage camera (Zenit E). This does the job
Begs you for a subscription every time you open the app. EDIT: Devs replied basically saying it's not a big deal that you get a full screen popup every time you open the app. The problem with that statement is, that there are other light meter apps that do not rely on invasive tactics like this. Furthermore, you want an app like this to be instantly accessible when you open it due to the nature of its usage. This isn't "asking for support" it's a very pushy way of begging.
Google Play Rankings for Light Meter - Lux, Exposure
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