A:Answer Hello there,
Thank you for your question and for having interest with our Sony KD43X77L TV. Unfortunately, no. The KD43X77L does not have the capability to adjust automatically the brightness of the screen as the room lighting changes. If you are looking for this particular feature, you might want to check this other TV model series:
Android TV | Google TV (LCD)
X80K (43-75)
X85K Series
X90K (55-85)
X90L Series
X93L Series
X95K Series
X95L Series
Android TV | Google TV (OLED)
A80K Series
A80L Series
A95K Series
A95L Series
Additional information:
With X77L BRAVIA 4K TV, experience all your favorite content in lifelike 4K HDR picture quality, powered by the 4K Processor X1. Google TV with Google Assistant organizes your content all in one place. Support Apple AirPlay.1,5. Take your PlayStation® 5 gaming to the next level with exclusive features that optimize picture quality for gaming and streaming. See blur-free picture quality in fast-moving sports and movies powered by Motionflow XR™ technology. Bring back lost texture and detail and see your content upscaled to near-4K resolution with 4K X-Reality PRO.
I hope this helps and thank you for considering Sony.
Regards,
Marco