The light metering tool for every great image maker.
Use the standalone app as a reflective light meter or use it in combination with Lumu Power hardware for professional Flash and Color Temperature measurements.
Lumu Power is an easy-to-use digital incident color and light meter that works seamlessly with the free Lumu app to deliver Color Temperature, Illuminance, Spot, Ambient, and Flash Exposure metering functionality on your iPhone.
A new expression of what a light meter can be, Lumu meets the needs of enthusiasts, professionals, and students who find existing light metering solutions too bulky, expensive, and complicated.
“The Lumu Power is without any doubt the most full featured light meter I have ever owned. It’s tiny, it weighs hardly anything, it manages to offer a feature set that expands way beyond what most will ever need from such a device.” - www.35mmc.com
Key features:
- SPOT METERING: Use your phone’s camera as a reflective light meter.
With Lumu Power:
- PHOTO SINGLE mode: Giving you exact parameters: exposure time, f-number, ISO, EV, lux.
- PHOTO MULTI mode: Calculating average value or contrast between multiple measurements.
- PHOTO PINHOLE mode: Measuring exposure time for custom pinhole camera settings.
- CINE/VIDEO mode: Set FPS, F-number, exposure time and ISO. Get the values for the ambiental light.
- FLASH EXPOSURE: See the graph of flash duration, measure its intensity.
- COLOR TEMPERATURE: Read light Color temperature in Kelvin and Green/Magenta shift.
- CHROMATICITY: See light colour in CIE1931 diagram and get X,Y,Z coordinates.
- ILLUMINANCE mode: showing incident light level in lux / foot-candle values.
- NOTES: Store all your measurements together with geo-location, custom notes and your photo in one place.
+ ND FILTERS, EXPOSURE COMPENSATION and more…
Visit http://lu.mu/ to learn more.
Light meter that works with the phone I’ve got on set anyway…awesome but the color meter feature isn’t very accurate at all. The reflective meter is accurate to within a tenth of a stop of my Sekonic meter, so that’s great and better than I expected. The spectrometer does a great job too. Where is falls short is in the color mode. Honestly the main reason I bought it. Small pocket sized tool that gives reflective metering and color. The accuracy is really really off though. Measuring outside in direct sunlight measures ~4300 kelvin…a true tungsten bulb measured about the same. Re-measuring an led source produces wildly different measurements every single time under the same conditions. Compared to my Sekonic C700 is laughable. Not that I expected this to be the same but this function (the reason I chose the pro version of the product) is so unusablely wrong that I don’t ever ever use it or would ever trust it.
2 stars for lack of support
blinddogbeach
I have nothing bad to say about the functionality of my Lumu Power 2. It gives me ballpark readings on outdoor ambient light on a daily basis for my job, shooting mostly landscape video. I mostly use it for color temperature, but after a recent app update I immediately lost functionality of my color meter. It will give me no readings and gives the error “cannot read CCT”. I tried a factory reset of the module through the app: it gives me an error and asks me to check my internet connection every time I try. I’ve tried chatting on iMessage through their website, DM on Instagram, and e-mail - I’ve received no response in well over a week. That’s just too long for me to receive no reply from multiple communication mediums and multiple follow-ups. I want to use this module and want to make it work (and will continue to) if they ever get back to me. If you’re looking for a product that does what it says and you’re not concerned with what to do if something goes wrong, then you’ll probably enjoy what it has to offer while it’s working.
Overall excellent
Simple but fun fun fun!!
The app plus the lumu sphere attachment is pretty good and could be great with some added features and tweaks. I was using it on a shoot today shooting 120 film and wanted to shoot on F/1.4 and wanted my exposure to be based off that criteria but the app only has shutter priority and ISO prioty; meaning it’ll lock down the shutter speed and ISO setting and only the F-stop changes. It would be nice to lock down the F-stop and let the shutter adjust to the selected criterias. This is a standard feature and should most definitely be available for a standard meter. The other feature just needs a little tweak is when the reading or setting is out of range way over or under there is a warning that comes up on the top of the screen but it’s not obviously enough.
Does the Luma “Pro” Dome require In-App purchases?
Jamdalu
The app is really nice! I am ready to purchase a dome and would like to know if the Luma Pro dome requires additional in-app purchases to “unlock” the pro features. Are the in app purchases merely upgrade options for the lower priced units? The pro model seems to have everything unlocked at $499 when combined with the free app, since it’s the only one without this flag: * If necessary, additional modes can be unlocked directly from the app after purchasing this model. Do all three domes share the same hardware, upgraded by the app? I want all of the pro features, and would like to know the final cost to unlock all features. Thanks!
Developer Response
If you decide to buy a Lumu PRO version then all the features are unlocked and there is not additional in app purchase available. All 3 models (or domes as you called it) share the same hardware. With Lumulove!
Hey Lumunauts,
Thanks for using Lumu Light Meter!
This is just a quick update that fixes a crash when using the app on iOS 12.
As always, any feedback, suggestions or advice can be sent directly to support@lu.mu.
Version 3.3.6
The developer, Lumu d.o.o., 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 Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Lumu d.o.o.
Size
54.7 MB
Category
Photo & Video
Compatibility
Requires iOS 12.0 or later.
iPhone Requires iOS 12.0 or later.
iPad Requires iPadOS 12.0 or later.
iPod touch Requires iOS 12.0 or later.
Languages
English and 6 more
English, Arabic, French, German, Japanese, Norwegian Bokmål, Swedish
