Great shot ! You can even see the spinning propellers, and it is incredible sharp for a 1/50 sec shot . It must to have been on a tripod but even then it takes a lot of foresight to choose just the right moment of a turning airplane to be coming exactly at you so it will not have motion blur. That Sigma 80-400mm F4.5-5.6 APO EX DG OS lens seems to be very well corrected .Look at those perfect symmetrical lights! Exellent.