Canon 5dII + Canon 100-400 + 1,5x converter + 2x converter which leads to a total focal distance of 1200mm. Subscribe for more Aviation videos.
more landings and depatures:
http://www.youtube.com/watch?v=XGammZXc2Eo
A nice Boeing 707 landing
http://www.youtube.com/watch?v=MY3vN5c0E8Y