LightSpectrum Pro

620nm LEDs are recorded as 750nm

Does not work well

The camera does not activate inside the app, so you can't measure anything beside the static blue background.

Crap app. Doesn't work at all on my iPhone 5. Wasted money.

Min 3GS påstår at alt har en farvetemperatur omkring 6000-7000 kelvin. Så lad være med at spilde tid på den her app.

Jeg målte et stearinlys til en temperatur på 4000 kelvin. Så nej den virker ikke.

I have some LEDs where I know the wavelengths, and under some combination lighting conditions the app is super inaccurate—but under lots of conditions (including combination ones) it’s very accurate. Useful tool, overall. I wish they would fix the inaccuracies but I’m still glad I have this app; there’s no other app that has a full spectrogram right now.

This app needs to have crosshairs or circle at a point on the screen, to only take measurements. General averages of the picture isn’t a great feature. Spot metering will make this app awesome!

This inexpensive app does a great job on my iPhone of measuring light color temperature which is exactly what I wanted!

I used to use a $2,000 light meter to measure color temperature when I worked in the film industry. This meter costs only a few bucks and is almost as good. The app description says it’s within 8% of the actual color temperature, which in most circumstances is sufficient. I tested the app in a variety of environments; I.e. outdoor sunny, outdoor cloudy, interior lights, balanced to daylight, cool white, etc. and it worked great. If you’re doing scientific measurements it might not be what you need but for film and video it’s pretty great.