Please add feature to turn off auto (adaptive) brightness

Same here... I just want Garmin to fix the auto-brightness behavior. It's terrible right now. 

I've come across another scenario where auto brightness fails. With colder weather in my area I am now wearing longer sleeves that cover the watchface. Even in full daylight the watch "sees" darkness under my sleeve and thinks it should dim the screen. When I uncover the watch to look at the screen I see nothing. It takes way too long to adjust to the actual level of light around me.

This wouldn't be a problem if I had the option to set the brightness manually.

This will be the last Garmin device I buy if it doesn't get fixed. I'm already looking at alternative brands. 

New software version (15.16) available with no mention of adding manual control over auto brightness. I've updated my watch and see absolutely no improvement in its behavior.

Aaron B.                                                                                                                                                                                       I think we should give Garmin users some time with the automatic brightness control and its adjustment or improvement, because it takes time for all the problems to be addressed and, if necessary, resolved step by step. Manual control of the automatic brightness should definitely be included in one of the next firmware updates. I am also eagerly waiting for it.

In German                                                                                                                                                                                 Ich denke mit der automatischen Helligkeitsregelung und deren Abstellung bzw Verbesserung sollten wir User Garmin etwas Zeit lassen denn es dauert halt bis die Probleme alle der Reihenfolge nach abgearbeitet und gegebenfalls bereinigt , beseitigt sind.
Die manuelle Steuerung der automatischen Helligkeit sollte auf jedenfall in einer der nächsten Firmware Updates vorkommen.
Auch ich warte dringend darauf.                                                                                                                                                                            

For me the 15.16 update did fix my auto brightness issues. Prior to the update, I had similar problems as mentioned here. Although some seem to have more severe issues than I had. For me there were only problems during evening/night times. During these evening hours, the display would sometimes change up the brightness at random from dim to bright or bright to dim, even with no change of the surrounding light. It was very annoying, but the display was always readable. I didn't experience these issues in the last 4 days since I updated to 15.16. It's weird that, apparently, it's watch dependent whether the new update fixes it or not. Hopefully they implement other fixes soon...

Thanks for posting this, as it clearly shows some of the auto brightness issues.  In my case (and many others), the brightness drops so low at times in dimly lit rooms to make the watch unreadable.  I'm guessing that that Garmin never tested this feature with anyone over the age of 40!