jan 1, 1928 - Rolleiflex Twin Lens Reflex camera, created by a German firm Franke & Heidecke, this camera technology with the lenses and focusing as well as its durability and small compact size made it very popular and paved the way for future cameras.
Description:
https://www.britannica.com/technology/RolleiflexAdded to timeline:
Date:
jan 1, 1928
Now
~ 97 years ago