Mike, I bet you can adjust that auto-dimming feature. I have a smaller unit (420) and it allows for adjusting the screen brightness (and auto-dimming). If I recall correctly, you press the power button (I think that the long press is off, so the short press should bring you to the brightness menu, though it might be the opposite) and you can adjust the brightness using the left-right panning buttons. Try it on yours, but probably, you don’t want to do it coming into a harbour at dusk.
Marek “Legato” Ottawa, ON
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