Over the years, the legendary Carl Zeiss optics in Contax 645 Mount have been revered for their exceptional quality and performance. Now, with the Metabones Contax 645 Lens to Fujifilm Gfx Smart Adapter, photographers can seamlessly transition these iconic lenses to modern mirrorless camera systems. This adapter, along with the Metabones Contax 645 to Sony E-Mount Smart Adapter, offers a reliable migration path, allowing users to experience the ergonomic feel of the original Contax 645 camera. By utilizing the lens' own aperture ring, photographers can effortlessly switch between aperture priority and manual exposure modes, while also having the option for fully automatic exposure and shutter priority modes.The Metabones Smart Adapter for Sony E-Mount includes a customizable button, which can be programmed to perform over 50 different functions on compatible Sony cameras, such as depth-of-field preview, enhancing the shooting experience. Additionally, the adapter features a tripod foot that is compatible with Arca-Swiss-style quick release systems, ensuring stability and ease of use during photography sessions.Metabones is renowned for its firmware stability and prompt updates, ensuring that users always have access to the latest enhancements. The firmware is user-upgradable via the Smart Adapter's micro Usb port, providing convenience and future-proofing. All Metabones Smart Adapters are designed to relay distance information from the lens to the camera body, enabling advanced 5-axis in-body image stabilization (IBIS). However, it's important to note that the Contax 645 Makro-Planar 4/120 lens does not report distance information and supports only 3-axis Ibis.Originally launched in 1999, the Contax 645 was a groundbreaking medium format camera, being the first of its kind to feature interchangeable lenses with autofocus motors built into the lenses. Today, these legendary Carl Zeiss lenses are being revitalized with cutting-edge mirrorless camera features, ready to embrace future technological advancements. The Metabones Contax 645 Lens to Fujifilm Gfx Smart Adapter is an essential tool for photographers looking to harness the full potential of their classic lenses on contemporary platforms..