Canon RF vs. Nikon Z
Comparing 2 standards across 9 specifications. 9 key differences identified.
The Canon RF Mount (introduced in 2018 for the EOS R system) is a 3-tab full-frame mirrorless bayonet mount featuring a 20.0 mm Flange Focal Distance, a wide 54.0 mm inner throat diameter, and an advanced 12-pin high-speed data bus. Retaining the large 54mm diameter of the classical EF mount, it enables ultra-fast aperture lenses such as the RF 28-70mm f/2L and 50mm f/1.2L.
The Nikon Z Mount (introduced in 2018 for the Z-series mirrorless system) features the shortest Flange Focal Distance (16.0 mm) and the widest inner throat diameter (55.0 mm) among current major full-frame mirrorless mounts (Sony E, Canon RF, Leica L). This geometry enables extreme optical designs, including the ultra-fast NIKKOR Z 58mm f/0.95 S Noct.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Flange Focal Distance (FFD)
|
20.00 mm (0.787 in) | 16.00 mm (0.630 in — the shortest FFD among current major full-frame mirrorless mounts) |
|
Inner Throat Diameter
|
54.00 mm (2.126 in — identical to legacy Canon EF mount) | 55.00 mm (2.165 in — the largest throat diameter among current major full-frame mirrorless mounts) |
|
Bayonet Tabs
|
3 asymmetrical stainless steel bayonet tabs with clockwise mounting twist | 4 asymmetrical locking tabs with counter-clockwise twist (traditional Nikon direction) |
|
Electronic Interface
|
12 contact pins (high-bandwidth bidirectional bus for lens control ring and Coordinated IS up to 8 stops) | 11 gold-plated contact pins |
|
Camera Systems
|
Canon EOS R5 / R6 / R3 / R8 / R, Cinema EOS C70 / C80 / C400, APS-C EOS R7 / R10 | Nikon Z9, Z8, Z7 II, Z6 III, Zf (full frame), Z50, Zfc, Z30 (DX APS-C) |
|
Legacy Adaptability
|
100% native AF/IS compatibility with all Canon EF/EF-S lenses via Canon EF-EOS R adapter (24mm spacer) | — |
|
Lens Control Ring
|
Physical programmable control ring on all native RF lenses (aperture, ISO, exposure compensation) | — |
|
Max Theoretical Aperture
|
— | Mount geometry (throat diameter and FFD) permits faster designs than F-mount allowed; the fastest lens actually shipped is the Z 58mm f/0.95 S Noct -- claims of a precise theoretical f/0.58 limit are back-of-envelope extrapolations, not a published Nikon figure |
|
Legacy F-Mount Adaptability
|
— | Nikon FTZ / FTZ II adapter (30.5 mm spacer) provides full AF/AE with AF-S and AF-P NIKKOR lenses |