Who created celluloid film stock?

• A. George Eastman
• B. Lumiere Brothers
• C. Thomas Edison
• D. George Melies

Answer: (A)

The main idea here is the shift to a practical, flexible film base that could be wound in a camera and run through a projector, which made long takes and mass production possible. George Eastman developed and popularized roll film on a cellulose nitrate (celluloid) base, a commercial innovation that Kodak brought to photographers and filmmakers in the late 1880s. This breakthrough turned film from fragile plates into a portable, repeatable medium, fueling the growth of the motion-picture industry by letting cameras capture longer sequences and enabling widespread distribution. The Lumière brothers contributed the first practical projection system and early screenings, Thomas Edison helped advance camera design and distribution networks, and Georges Méliès expanded filmmaking with imaginative effects. Yet for creating celluloid film stock itself and making it a practical standard, Eastman is the figure most closely associated with that pivotal advance.