This question seems the state that it is usually okay to use a camera during takeoff and landing, as long as you've turned off the wifi, etc.
If I'm in a window seat, can I use a large telephoto lens, i.e. Canon 70-200L or 100-400L? When fully zoomed, these things are pretty massive. Or is this likely to draw the angry attention of cabin crew more than, say, a 40mm pancake?
I am interested in shooting downwards as the plane banks, to capture a "close-up from above". Let's assume that the person next to me is okay with me possibly leaning back into their space.