I shot a fox last night in full dark, looking through an Alpex 4k lite at 120m, but with an IR illunator. Shot placement was not as critical at that range but was still no where near as good as glass in daylight - at 200m that would have been a guess in the general direction nd I would have likely not taken the shot. Digital is great for marginal light, thermal best for full dark and glass for daylight. I have a Lynx 3.0 which is a cheaper thermal spotter, but in full dark you can see the details in rabbits at 200m plus, to the extent that I can’t see the object of the heat source through the Alpex unless it moves. If I had to do 400m shots in full dark to fulfil a cull plan I would be using thermal scopes only. I still only use glass for deer in woodland because I don’t need to pull the trigger and part of the fun is getting close.