I wonder why he created so many physically huge works. Nice editing job, too, Sidd. You spent some time on this one.
Thank you Dave the video did take a little bit of time. Since I was almost alone in there I tried to get some movement like you were walking around and had the ability to get up close. Glad you enjoyed watching.
This is what I found on why the figures are so big to begin with:
The paintings are oriented so that to view them right-side-up, the viewer must be facing the altar on the far side of the altar wall. The sequence begins with Creation, above the altar, and progresses toward the entrance-side of the chapel on the other side of the room.
Realizing that the figures were too small to serve their purpose on the ceiling, he decided to adopt larger figures in his subsequent frescoed scenes. Thus, as the paintings moved toward the altar side of the chapel, the figures are larger as well as more expressive of movement. Two of the most important scenes on the ceiling are his frescoes of the Creation of Adam and the Fall of Adam and Eve/Expulsion from the Garden.
I also read that he painted the figures representing God last so that he had plenty of practice with the other figures.
Here is the map of the paintings:

Sidd
Vivere memento. – 'Remember to live..'