Sigma GF 24mmF2 Lens Patent for Fujifilm GFX

Back in 2023, Sigma’s CEO said that Fujifilm GFX users would be their ideal customers, while also making it clear that Sigma had no plans to produce G-mount lenses at the time.

Then in 2024, the tone changed. Sigma’s CEO stated that if Sigma truly wants to become the “master of optics,” it would eventually need to make lenses for the Fujifilm GFX system.

That statement raised expectations that Sigma GFX lenses could arrive sooner rather than later. However, in 2025, the message shifted once again: Sigma currently has no concrete plans, and GFX lenses are something that might happen “maybe in the distant future.”

So, what’s the situation now?

A newly surfaced Sigma patent may provide a small but interesting clue.

The patent describes an optical design for a 24mm f/2 lens that appears to cover a sensor larger than full frame. Based on the technical specifications, the Japanese website Asobinet speculates that this design could be intended for Fujifilm GFX (44×33mm).

And the fact that Sigma is even investigating and patenting optical designs for GFX-sized sensors is noteworthy.

It suggests a few things:

  • The GFX system’s market share is growing, possibly approaching a point where Sigma sees long-term potential
  • There likely isn’t any “mount protection” preventing third-party manufacturers from producing G-mount lenses, meaning Fujifilm appears open to external lens makers

These are undeniably positive signals.

However, a strong reality check is needed. Over the years, I’ve shared hundreds of patents on FujiRumors. Only once did I spot a patent before it turned into a real, shipping product. In all other cases, patents either surface after a product is announced—or never materialize at all.

We’ve seen this countless times:

So while today’s Sigma patent is encouraging—especially because it shows third-party interest in the G mount—it does not mean Sigma GFX autofocus lenses are just around the corner.

For now, this is best seen as a first signal, not a promise. The road to third-party G-mount AF lenses may still be long—or may never happen at all.

Patent Details

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Fotodiox Unveils First-Ever Mamiya 6 to Fujifilm GFX Lens Adapter with Electronic Communication

Fotodiox has unveiled the Mamiya 6 to Fujifilm GFX Fusion adapter, marking the first solution capable of electronically managing Mamiya 6 lenses.

Traditionally, Mamiya 6 rangefinder lenses relied on the proprietary electronic system of the Mamiya 6 camera, which rendered them incompatible with other platforms—until now. Leveraging Fotodiox’s Fusion technology, the adapter establishes electronic communication with Fujifilm GFX cameras, enabling functionalities such as aperture control.

In short: the adapter unlocks the internal electronic  leaf shutter so that you can use the mechanical shutter of the Fujifilm GFX.

The video below will show you exactly how it works and how to set up the adapter to work properly on your GFX camera.

Key Features

  • • Mounts Mamiya 6 Rangefinder Lenses to Fujifilm G-Mount (GFX) Mirrorless Cameras; infinity focus or beyond guaranteed
  • • Built-in FUSION technology enables electronic communication and control between lens and camera
  • • Allows for some automated functions such as aperture control with compatible lenses
  • • Precise fit and solid all-metal construction with chrome plated brass mounts for secure and solid fit; lens has no play, gap or wiggling when mounted on adapter and no adjustments required

Additional Details

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BREAKING: Fixed Lens Fujifilm GFX Coming Within March 2025

According to our trusted sources, the fixed lens Fujifilm GFX camera will come within the end of this Japanese fiscal year.

We remind you that the Japanese fiscal year ends on the 31th of March 2025.

It will ship in 2027*
*just kidding, that would be way too fast for Fujifilm standards :D

Sigma CEO Expresses Interest in Fujifilm GFX Support: “If We Want to Master Optics, We Need to Support Medium Format”

image courtesy: sigma-sein.com
image courtesy: sigma-sein.com

In an interview to Petapixel, Sigma’s CEO, Kazuto Yamaki, has expressed personal interest in supporting medium format cameras with the company’s lenses.

While Sigma has focused on building its lens lineup for full-frame mirrorless cameras, Yamaki acknowledges the growing popularity of medium format cameras and the potential for third-party lens manufacturers to enter this market.

Although there are currently no official plans to support medium format, Yamaki stated that it is his personal hope, and he emphasized the need to carefully assess the market and demand.

Here are the relevant quotes from the article:

I [am] personally very much interested in supporting medium format. Again, it’s a small market, but I have some interest.

[…]

So right now we don’t have such plan, but if Sigma wants to be a master of optics, I think we need to support medium format. But that’s just personal hope. But I need to carefully look at the market and demand

Fortunately, the CEO’s personal opinion holds significant influence, perhaps more than any other within the company. These statements indeed inspire optimism.

Additionally, it is now evident that Fujifilm has not restricted the G-mount to third-party manufacturers. If this were the case, Sigma would have publicly expressed their concerns, just as they did previously when they complained about Fujifilm not permitting them to produce X mount lenses.

It’s only an issue of market share. And luckily the Fujifilm GFX (and also Hasselblad X system) market share is growing.

You can read the full article at PetaPixel here (image from sigma-sein.com)

 

Fujifilm GFX100II: That’s the Name of the BEAST Coming on September 12

Finally we can stop calling it the “Fujifilm GFX100 replacement”, or speculate around with names like Fujifilm GFX150 or exotic ones like Fujifilm GFX100+.

Finally the beast has a name.

And the name is Fujifilm GFX100II.

And it’s coming to dominate charts and hearts ;).

Mic drop.

NOTE: the image above is AI generated and does not show the real camera

Fujifilm X Summit September 12 at 5 AM New York Time
GFX100II Rumors & More

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