Leica L-Mount vs. Micro Four Thirds Mount
Comparing 2 standards across 9 specifications. 9 key differences identified.
The Leica L-Mount (developed by Leica Camera in 2014 and formalized under the L-Mount Alliance with Panasonic, Sigma, DJI, and Leitz Cine in 2018) is a 4-tab bayonet mount featuring a 20.0 mm Flange Focal Distance, a 51.6 mm throat diameter, and a robust stainless steel clamping mechanism covering both full frame and APS-C formats.
The Micro Four Thirds Mount, introduced in 2008 by Olympus and Panasonic as the first mirrorless system built as a dedicated open standard (rather than an adapted rangefinder mount, as with the earlier 2004 Epson R-D1), features a 19.25 mm Flange Focal Distance, a 38.0 mm throat diameter, and an 11-pin all-electronic bayonet interface. Governing an open consortium, it is used across OM System, Lumix, Blackmagic Design, and DJI aerial cameras.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Flange Focal Distance (FFD)
|
20.00 mm (0.787 in) | 19.25 mm (0.758 in) |
|
Inner Throat Diameter
|
51.60 mm (2.031 in) | 38.00 mm (1.496 in) |
|
Bayonet Tabs
|
4 asymmetrical stainless steel locking tabs (high mechanical rigidity for cinema primes) | 3 symmetrical stainless steel tabs |
|
Electronic Interface
|
8 gold-plated electronic spring contacts (standardized cross-manufacturer protocol) | 11 gold-plated electronic contacts (shared protocol between OM System and Panasonic) |
|
Camera Systems
|
Panasonic Lumix S5 II / S5 IIX / S1H / BS1H, Leica SL2 / SL3 / Q series, Sigma fp / fp L, DJI Ronin 4D | OM System OM-1 Mark II, Panasonic Lumix GH6 / G9 II, Blackmagic Pocket Cinema Camera 4K, DJI Inspire 3 X9 MFT |
|
Alliance Partners
|
Leica Camera AG, Panasonic Corporation, Sigma Corporation, DJI, Ernst Leitz Wetzlar GmbH, Blackmagic Design | — |
|
Coverage Formats
|
SL (35mm Full Frame 36×24 mm) and TL (APS-C 23.6×15.7 mm) | — |
|
Historic Milestone
|
— | First mirrorless system built as a dedicated open standard, launched with the Panasonic Lumix G1 (2008) -- the earlier 2004 Epson R-D1 was a mirrorless interchangeable-lens camera, but on an adapted rangefinder mount, not a purpose-built open standard |
|
Consortium Members
|
— | OM Digital Solutions (Olympus), Panasonic, Blackmagic Design, DJI, Sharp, Voigtländer, Laowa |