/EF-S-Adapter

Hard- and Firmware to control different EF and EF-S lenses

Primary LanguageCMIT LicenseMIT

EF-S-Adapter

Hard- and Firmware to control EF/EF-S lenses. The protocol used has grown since the first generation of EF(-S) lenses hence is a bit extensive with different layers of compatibility. On the physical layer a SPI like interface is used with I2S alike clock-stretching.

Please use at your own risk, the hard- and firmware are experimental and can damage your lens!

Status

v1
  • Tested
  • May shorts power rails on lens attachment
v1.1
  • Tested

Todo

  • Make lens hotplugable (needs new hardware revision)
  • Create helper functions (like set_aperture_to(aperture))
  • Documentation

Thanks

Thanks to Jean for this blogpost!