Thanks for all the comments. Recall that I'm simply a well practiced technician handling the equipment. As pointed out in another thread, God put it out there. We just have to show up and make the captures
From time to time much closer than I preferred to beBut regarding these particular images I tried to estimate range based on equipment used and FOV of the originals. Some were shot with the D810 in crop mode in which case I've indicated EFL(equivalent focal length) Results as follow:
1) 600mm EFL, 175ft(55m)
2&3) 600mm EFL, 150ft(45m)
4) 750mm EFL, 250ft(75m)
5) 400mm, 125ft(40m)
6) 200mm, 60ft(20m)
7) 400mm, 125ft(40m)
Then there's the following shot. Taken at 400mm, TBC(too bloody close). They walked right by us along the edge of the creek. Mom never looked up but the youngster kept an eye on us. One has to wonder what they make of a camera lens pointed at them. Reckon it looks like a huge eye watching them?