Third-party lens makers are not shying away from reviving iconic lenses for modern cameras. Funleader, a Guangzhou-based company, has been pursuing the same goal for several years, and today, they are introducing yet another new lens for Leica M users: the Contax G28. Here is a look at what the company offers and how it benefits Leica users.
According to Funleader, the company is bringing back classic Contax G lenses, first introduced for the Contax system in the 1990s, for the new Leica M series camera. They note that the Contaxt lenses won’t be entirely modified from their original makeup.
For the uninitiated, the Contax G lens was co-developed with Carl Zeiss and included models such as Planar 35mm f2, Planar 45mm f2, and Biogon 28mm f2.8. While the Contax cameras have been discontinued, the lenses remain popular among many photographers. The company notes that “many photographers who own these lenses also use Leica M cameras,” which gave Funleader the idea of adapting Contax lenses for Leica users.
One thing they kept in mind was creating a conversion kit designed to be installed without changing the lens. The optical design remains the same as the original. The project began in 2019, with the launch of the G35 conversion kit, which helped to adapt the Planar 35mm f2 for Leica. In 2021, they announced G45, which made the Planar 45mm f2 available for users. Each year, the company continues to refine the lens converter, which now helps to provide smooth focus and better internal mechanical structures. In 2025, the company introduced G35 v2.0, which offered improved focus and internal lens elements based on user feedback.
Today, they have launched G28 conversion, which the team says is “selected a combination of materials to balance durability and weight.” The conversion kit is made of aluminum, and it keeps the weight manageable. With G28, people can now use the Biogon 28mm f2.8, which further completes the trio of Contaxt lenses for M users.
People who are shooting documentary, travel, street, or environmental portraits will truly enjoy using all three focal ranges, from 28mm to 45mm, for their needs. If you shoot architecture and interiors, the 28mm will certainly be useful.
The price is not yet available, but considering how good the 35mm f2 and 45mm f2 conversions are, we’re all bound to love this one.