Incredible dissection of pancake lenses—those that usually come with a 4/3 camera by Roger Cicala from Lensrentals.com:
Article starts with two lenses (Sony 16mm f/2.8 and Olympus 17mm f/2.8):
Instinctively, I know that there are electronics inside a modern camera. However, these lenses show more mechanical parts than electronic parts. This appeals to my inner nine year-old. Except I’d never be able to reassemble the stuff I took apart and it got me into some degree of trouble. And I turned instead to Lego. Which worked out much better.
Hat tip: PetaPixel.