The Lockheed Sniper Pod is probably about as good as it gets for pod mounted targeting/surveillance sensors. I think the F-35 EOTS has better imaging but I don't know if it can zoom in as high (or perhaps the range in this video was a lot shorter).
Sniper Pod
https://www.youtube.com/watch?v=q7_wU4rxuFg
vs
F-35 EOTS
https://www.youtube.com/watch?v=CPc8UlkqYr8
Sniper Pod
https://www.youtube.com/watch?v=q7_wU4rxuFg
vs
F-35 EOTS
https://www.youtube.com/watch?v=CPc8UlkqYr8