Body: Canon EOS M100
Lens: EF-M 28mm f/3.5 Macro IS STM
This is the sound made by the lens when continuous auto-focus is enabled. Is it a defect? I don't know!
If continuous AF is disabled, it is nearly (but not toally) silent.
When shooting video, it is nearly (but not toally) silent.
Lens is in regular mode (not super macro).
You can hear the shutter-release sound at 0:24 and 0:47 for comparison.
Lens was purchased new, directly from Canon.
