Fujifilm X-Mount vs. Nikon Z
Comparing 2 standards across 9 specifications. 9 key differences identified.
The Fujifilm X-Mount (introduced in 2012 for the X-Pro1) is a dedicated APS-C mirrorless bayonet mount featuring a 17.7 mm Flange Focal Distance, a 40.7 mm throat diameter, and a 10-pin electronic interface. Designed exclusively for APS-C image circles, it allows compact lens designs optimized for Fujifilm's proprietary X-Trans CMOS sensors.
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)
|
17.70 mm (0.697 in) | 16.00 mm (0.630 in — the shortest FFD among current major full-frame mirrorless mounts) |
|
Inner Throat Diameter
|
40.70 mm (1.602 in) | 55.00 mm (2.165 in — the largest throat diameter among current major full-frame mirrorless mounts) |
|
Bayonet Tabs
|
3 locking tabs with counter-clockwise mount twist | 4 asymmetrical locking tabs with counter-clockwise twist (traditional Nikon direction) |
|
Electronic Interface
|
10 contact pins (opened to third parties in 2020: Tamron, Sigma, Voigtländer, Viltrox) | 11 gold-plated contact pins |
|
Camera Systems
|
Fujifilm X-T5, X-H2, X-H2S, X-T30 II, X-S20, X-Pro3, X-E4 | Nikon Z9, Z8, Z7 II, Z6 III, Zf (full frame), Z50, Zfc, Z30 (DX APS-C) |
|
Back Focus Distance
|
Minimum rear optical element clearance of 7.5 mm from sensor | — |
|
Physical Aperture Rings
|
Standard mechanical aperture rings with 1/3-stop clicks on XF lenses | — |
|
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 |