I was wondering if somebody knows an app to see 'what's in view'? I have done some searches over the net, but what I did found was not exactly what I need or I just don't know the right words to search on.
I am an RC KAPper without FPV. So if my apsc cam with 24mm is 70 meters up, looking strait down, I want to know how many meters will be in view (on ground level). I can calculate it of course, but with different heigths and camera angles (!) an app would be more convenient. Ideally it would compose a simple draw with an upside down triangle so you can find out if the (higher) object would fit in the shot.