True Tone on New MacBook Pro Relies on Multi-Channel Ambient Light Sensor With Display Open to Work

Following in the footsteps of the latest iPhone and iPad Pro models, the new MacBook Pro features True Tone technology.


True Tone automatically adjusts the white balance of the MacBook Pro display to match the color temperature of the light around you, which, as Apple says, provides a more natural viewing experience. The feature is similar to Night Shift, but more dynamic, continuously adapting to the surrounding environment.

If you are standing in a dimly lit room with incandescent light bulbs, for example, the display would appear warmer and yellower. If you are standing outside on a cloudy day, the display would appear cooler and bluer.

True Tone on iPad Pro

We've received many questions about how True Tone is enabled on the new MacBook Pro, and we've sought out some answers from Apple.

Apple says the new MacBook Pro has a multi-channel ambient light sensor, next to the FaceTime HD camera, that can assess brightness as well as color temperature, adding that the display should be open to enable that functionality. Apple added that True Tone does not use the FaceTime HD camera for its operation.

Apple says the ambient light sensor in previous-generation MacBook Pro models can only assess brightness, suggesting that True Tone is not a feature that can be enabled on older machines through a future software update.

The information also suggests that True Tone will only work on the LG UltraFine 4K, LG UltraFine 5K, and Thunderbolt Display when the display on a connected MacBook Pro is open, rather than in closed-display aka clamshell mode. Apple did not directly confirm this, though, so we'll be testing to see.

True Tone can help reduce eye strain, so it's a feature worth considering if you purchase the new MacBook Pro. It can be enabled or disabled in System Preferences under Displays, alongside options for Night Shift and auto-brightness.

True Tone can also be enabled on the iPhone 8, iPhone 8 Plus, iPhone X, 9.7-inch and 10.5-inch iPad Pro, and the 2017 model 12.9-inch iPad Pro.

Eric Slivka contributed to this report.

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How to Control and Tweak a True Tone Display on iPhone and iPad

Last year, Apple brought a display feature called True Tone to its flagship iPhone line-up for the first time, following the technology's debut in 2016 with the 9.7-inch iPad Pro.

True Tone works by adjusting the color temperature of a device's screen to match the surrounding ambient light, so that images on the display appear more natural and are less apt to contribute to eyestrain.


If you stand in a dimly lit room illuminated by a table lamp, for instance, a True Tone display appears warmer and yellower, much like a piece of paper would in the same light. Stand outside on an overcast day, however, and the same display looks cooler and bluer, as would the same piece of paper.

In this article, we'll run through how to quickly enable or disable True Tone from within Control Center as well as via the Settings app. We'll also explain how to tweak your device's color settings to help acclimatize you to True Tone's warmer extremes, which some users find too intense under certain conditions.
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