Through its 12-pin electronic contacts, the RF mount significantly improves EOS-lens communication support and enables new functions.

Like EF cinema lenses, lens metadata can be read, recorded, and displayed at the destination. Compatible cameras can correct lateral chromatic aberration, peripheral illumination, and dual pixel focus guide using this data.

When using the lenses with the EOS C70 and the EOS R5C, the RF mount eliminates the need for a mount adapter.

Based on registered lens information, these image correction features can be activated or deactivated.

The viewfinder can show lens information, and metadata like lens name and position can be stored in the image.

As a defining characteristic of the Cinema Lens, the focus ring can mark numbers on both the left and right sides of the lens, allowing the distance indicator to be viewed from either side.

Changeable "ft" and "m" display units - by switching exterior components, users can toggle between feet and metres for distance marking.

Indicator markings with phosphorescent paint have been applied to the front barrel (for right-side viewing) to increase nighttime and low-light shooting visibility.