ISIS video and camera capability
I took this photo /www.flickr.com/photos/peamasher/6574265697/in/photolist-b1WQ9z with a Panasonic FZ-28 bridge camera which has a maximum zoom of 476 mm in 35mm film terms. The El Al B747-400 was at 35000', somewhere near Luton according to FR24, and I photographed it from my home in Aylesbury, Bucks.
On another occasion, using the camera as a telescope, I could easily read 'Emirates' on the underside of a Dublin bound B777, just south of Manchester.