Complex sentence: Such an effect required an atypical production approach, with many elements of post-production requiring consideration before principal photography; the script took two years to write, the cast went through several weeks of meticulous rehearsals, and during shooting takes were cut for the slightest mishaps.
Split into simpler sentences: Such an effect required an atypical production approach, and many elements of post-production required consideration before principal photography. The script took two years to write, the cast went through several weeks of meticulous rehearsals, and during shooting takes were cut for the slightest mishaps.