My Zeus 3x 75mm arrived today, I don't know beans from shinola about these things except it doesn't have an AGC that can be turned on/off in the menu. With that said will the back ground auto dim when there is a hot object? I just sent back a $600 ATN x-sight because I didn't think it was safe. I know I can send this back and get the firmware/software updated because a friend has already pulled his and it it back at the factory. It's just frustrating is all that no-one seems to know what is going on at Armasight.LOL I have to or cry, 6-7K a lot of money to some folks.