For me it meant the first time using my Canon Mark IV. I had a few adjustments to make but then got the hang of the amazing rapid fire...a far sight quicker than the Mark II. In addition to the 10 fps, I liked the extra zoom. The 300mm lens is just too bulky for me so it's a nice compromise to stick the 70-200mm on the 1.3x sensor.
The lighting at SOPAC is all but non existent. At one stage I was feeling ready to sleep it was that dark. Around 12800 ISO dark. These challenges are sent to try us!