Yongnuo 50mm f/1.8 disassembly & aperture blade cleaning (in 4k)

[2022-06-17] Using a pencil/toothpick, I nudged the exposed lever so that the blades would close. Not sure if it was problematic as it was or due to my manual rotation, but one of the blades didn’t follow the pattern. Gently opening/closing the blades and coercing the rogue one to align/synchronize, the aperture seemed to be fixed. Some blades had blotches of oil/lubricant, so just to be safe, I carefully wiped those with tissue.
Full story here: brymac.info/bl...
music: Vapor - Ann Annie
shot using Pixel 3 XL 4K@29.97fps
edited via Hitfilm Express.