Luxilux Light Meter 4+

Measure the perfect exposure

Christian Lobach

    • 4.8 • 61 Ratings
    • $4.99



You like using your old film camera but it doesn't have a built-in light meter?
The built-in meter is broken or requires special batteries?
With Luxilux you always have a light meter in your pocket.

--- METERING ---
Luxilux will take an average reading of the image you see in the preview.
Specify the area for the meter reading even more accurately by zooming in or out.
If your device has two or three back cameras, you can switch between them.
You can also tap on points of interest to expose correctly for them.

--- MODES ---
Use Luxilux in aperture priority mode (Av) by choosing the ISO and aperture, and Luxilux will calculate the right shutter speed to get a proper exposure.
Use it in shutter priority mode (Tv) by choosing the ISO and the shutter speed, and Luxilux will calculate the right aperture to get a proper exposure.
Manual mode (M) lets you change all values and shows you how much they differ from the calculated optimal exposure.

Tap "Save" and the currently selected settings are saved alongside a preview image into your photo library.
If you give location permission you can also save where the measurement was taken.
You can view your saved photos in Luxilux or in the Photos app.

--- PROFILES ---
You can choose between full stops, half stops or third stops for ISO, aperture and shutter speed.
Specify the minimum and maximum values that your combination of camera, lens and film supports.
Save these settings in profiles so you can quickly recall them.

What’s New

Version 2.0.1

fix a potential crash

Ratings and Reviews

4.8 out of 5
61 Ratings

61 Ratings

AertoneFX ,

A Delightful Light Meter App

The Luxilux Light Meter app truly is a masterpiece of an app. It, quite elegantly, displays all the necessary information that one would need in properly adjusting their Camera for the perfect shot. Unlike other light meter apps on the App Store, this app doesn’t have any gimmicky, unnecessary visuals that don’t enhance or add to the user’s experience, but rather tasteful choices in displaying certain information, such as the aperture, or the shutter speed, where these informations are neatly and uniformly displayed to the user. Additionally, the developer has a fantastic no data collected privacy policy, which adds to the value of this reasonably priced app. Overall, a fantastic light meter app that makes setting up your camera a delightful breeze.

bwstryker ,

Great communication from app developer!

I had an issue with my iPhone enlarging the text too much on the app and the developer responded 5 minutes later with a fix! I’m blown away by such great service. The app is perfect for the mid level photographer to test out how close they can get to guessing proper exposure without an expensive light meter. I do it by eye and use this app to double check.

mhall8 ,

Great Light Meter!

This is a great light meter for my film/analog camera! It seems very accurate, and I like the UI.

Note: it does not take pictures, but that is as intended as this is just a meter for getting the correct exposure for your film camera.

I would love the capability to save certain lenses and their specific apertures in a future update, but the app works exactly as intended.

Developer Response ,

Thank you for your review and the feature request!

App Privacy

The developer, Christian Lobach, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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