Leitz Cine has introduced a Fujifilm G mount option for its Hektor prime lenses, opening the door to compatibility with Fujifilm’s GFX platform, including cameras like the Fujifilm GFX100 II and the Fujifilm GFX Eterna 55.
This is not a reinvention of the Hektor line, nor a signal that Leitz Cine is pushing these lenses into “beyond full frame” coverage. The Hektor primes sit firmly in the large format cinematography category, designed to cover 35mm Full Frame and VistaVision sensors with consistency. Beyond that, coverage becomes conditional.
A Practical Expansion
The addition of a G mount feels more like Leitz Cine recognizing an opportunity than executing a broader strategic shift. The physical compatibility is straightforward, and the existing image circle offers just enough coverage to make the pairing usable in specific scenarios.
As with other mount options including E, L, RF, and Z, users can order Hektor lenses with the G mount installed or swap mounts themselves. However, the process is not entirely trivial. The G mount configuration introduces an additional spacer and locating pins that require careful alignment during installation. It is not the kind of swap you want to rush on set or attempt in less-than-ideal conditions. A controlled environment is strongly recommended, and in most cases, having a qualified lens technician handle the conversion is the safer route.
Coverage Reality Check
While the Hektor primes extend slightly beyond standard full frame coverage, they were never designed for sensors of this size. On GFX cameras, especially in open gate modes, coverage will vary depending on focal length. Wider lenses will show more pronounced falloff or vignetting, while longer focal lengths tend to perform more favorably.
When working within standard cinema aspect ratios, there is usable coverage. Framing for 16:9 reduces edge issues enough to make the combination viable in practice, though not without compromise.
Context Within the Leitz Ecosystem
It is worth noting that Leitz Cine is no stranger to true medium format coverage. The Leitz Thalia Primes were among the first purpose-built medium format cinema lenses, even if parts of their design language trace back to the Leica S system for certain focal lengths.
That distinction matters. The Thalia primes were engineered with large image circles as a primary requirement, not an afterthought. In contrast, the Hektor line was optimized for a different format entirely. The introduction of a G mount does not change that, but it does highlight the breadth of Leitz Cine’s optical design capabilities across formats.
Where It Fits
For existing Hektor users, the G mount adds flexibility without requiring a new lens set. For GFX shooters, it offers an option in a relatively slim market of beyond-full frame cinema lenses, with clear limitations that need to be understood before use. This is not about achieving perfect coverage across a large format sensor. It is about extending the usability of a lens set into a system that was not originally part of its design.
Availability
Leitz Hektor lenses and interchangeable mounts, including the Fujifilm G option, are available through Duclos Lenses.