Product information "Adapter EF-Mount lenses (manual) to M39 thread "
Adapter manual Canon EF lens to M39 thread

-Precision made lens adapter

-No information transfer

-Exposure metering by means of aperture priority mode or completely manual

NOTE:

This adapter ring can only be used on a bellows unit!
On cameras with M39 thread, lenses can not be focused up to infinity!

As with all other NOVOFLEX adapters, this is a purely mechanical adaptation. With original Canon EF lenses, aperture control isn't possible.
The use of EF-Mount lenses with a mechanical aperture ring (Canon EF Cine lenses, Zeiss Compact Prime lenses, Samyang, etc.) is recommended.

To use original Canon EF lenses on the bellows, the reversing adapter EOS-RETRO is available. In combination with a Canon EOS cameras, this can be connected to all NOVOFLEX universal bellows.
Bellows: BAL-F, BALPRO 1, BALPRO T/S
Built-in aperture control: no
Lens End: Canon EF
Hersteller/Manufacturer: Verantwortliche Person/Responsible f. Product Safety: NOVOFLEX Präzisionstechnik GmbH Brahmsstraße 7 87700 Memmingen E-Mail: mail@novoflex.com