What does it do :
This chip when fix to an adapter (available separately) mainly enables the camera AF confirmation indicator when you turn the focusing ring manually until the subject gets focus. There's no communication between the lens and camera mounted on the adapter with this chip. Aperture and focusing are still manual whether AF or manual lens is mounted.
Compatible with all EOS cameras
- This chip has a fixed pre-programmed aperture value (EXIF). It is not user changeable
- Picture may differ from actual product due to production version