Kingsman - The Secret Service
This series of "above the clouds" matte paintings was problematic. They were created for a whole sequence, the edit of which was not locked down on the client side (!) and was constantly changing. They were meant as a backdrop for a balloon ride with a constantly changing height, therefore any change to the edit would mean having to start each matte painting completely from scratch from an altogether different altitude.
As deadlines don't change, the turnaround for each version was insanely fast.
These was also awkward as any reference material taken from an aeroplane would have been too low and any satellite imagery, too high.
Original dmp size: 4800 x 8620.