[t34543]

I’ve read this as well but my macbook senses ambient light and adjusts my backlight accordingly. Isn’t this through the camera - with no LED?

[klodolph]

The ambient light sensor is right next to the camera, I think it's usually to the left. It's a bit hard to test since they're close together. Macs have had ambient light sensors for a long time. For example, take an old iMac and put it to sleep. The power light will pulse with a period of about 2s, and the brightness will depend on the ambient light level.

Edit: Just tested on my MBP. Opened photo booth, covered the camera with my thumb, shone a bright flashlight at the point just left of the camera. The display got brighter but Photo Booth showed no changes in what the camera was seeing.

[Analemma_]

No, the ambient light sensing is done with a light sensor on the body - look for the tiny hole drilled into the chassis. It doesn't use the camera.

[ljm]

Remember when they did that for your battery power indicator! With a little button to trigger it.

[eightysixfour]

https://apple.stackexchange.com/questions/347895/where-is-th...